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1st International Conference on Material Processing and technology, ICMProTech 2021

作者： Jitsopin, Patiwarada Masa, Abdulhakim Hayeemasae, Nabil Rasidi, Mohamad Syahmie Mohamad Rubber Engineering and Technology Program International College Prince of Songkla University Songkhla Hat Yai90110 Thailand Department of Rubber Technology and Polymer Science Faculty of Science and Technology Prince of Songkla University Pattani Campus Pattani 94000 Thailand Perlis 01000 Malaysia Perlis 01000 Malaysia

Natural rubber (NR) composites filled with various sepiolite loadings were prepared and optimized by two different mixing methods, namely, melt mixing and latex mixing methods. The properties were evaluated through viscosity, stress relaxation, curing behaviors and tensile properties of rubber composites. The viscosity was influenced by sepiolite content and mixing methods. The greater interaction between rubber and sepiolite was obtained from melt mixing method. This reflected to the greater tensile strength found in this method. Considering the content of sepiolite, similar trend was observed for the curing properties and elongation at break. The greatest tensile strength was observed when the sepiloite content was at 1 phr. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Rubber

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A Review on Digital Simulation Strategies and Its Applications for Advanced Compression Garments

A Review on Digital Simulation Strategies and Its Applicatio...

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作者： Seonyoung Youn Ryan Darden Kavita Mathur Fiber and Polymer Science Ph.D.program North Carolina State University Department of Textile Engineering Chemistry and Sciences M.S.Textile Engineering program North Carolina State University Department of Textile and Apparel Technology and Management North Carolina State University

This paper presents a comprehensive review on the current state of digital simulation technology and its strategic application usages with a key focus on advanced compression garments. Although three-dimensional(3D) digital garment simulators have significantly impacted the apparel and textile industry, their use has been limited to visual prototyping, quality checking, or marketing. The physical properties of garment simulators have been overlooked in advanced functional manufacturing. This literature review investigates the possibility of strategically utilizing virtual physical properties to enhance garment functions, specifically in wearables and medical-grade compression fields. The first phase of this paper gives an overview of the current state of 3D garment simulation tools and their measurement features. This is followed by a gap analysis between simulated and physical property evaluations, focusing on minimizing the gaps. The literature is thoroughly examined to identify appropriate studies that uses digital tools for compressional garments and add value to wearables and healthcare applications. This paper provides valuable insights for apparel and textile engineers, enabling them to better understand the limitations and capabilities of garment simulators in improving advanced features for specific end users.

关键词： 3D Digital Garment Simulator Advanced Compression Garment Digital Strategy Medical-grade Compression Simulated Physical Property Virtual Evaluation

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Assessing the Potential of Biodegradable Plastics in a Circular Economy: A Methodological Outlook

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Circular Economy and Sustainability 2025年第2期5卷 1291-1305页

作者： Scheers, Quinten Nimmegeers, Philippe Galant, Or Spatari, Sabrina Van den Brande, Niko Brancart, Joost Billen, Pieter Faculty of Applied Engineering Intelligence in Processes Advanced Catalysts and Solvents (iPRACS) University of Antwerp Groenenborgerlaan 171 Antwerp 2020 Belgium Faculty of Business and Economics Department of Engineering Management Environmental Economics (EnvEcon) University of Antwerp Prinsstraat 13 Antwerp 2000 Belgium Flanders Make@UAntwerp Antwerp 2000 Belgium Faculty of Civil and Environmental Engineering Technion– Israel Institute of Technology Haifa 3200003 Israel Grand Technion Energy Program Technion– Israel Institute of Technology Haifa 3200003 Israel Physical Chemistry and Polymer Science (FYSC) Vrije Universiteit Brussel Pleinlaan 2 Brussels 1050 Belgium IVL Swedish Environmental Research Institute Valhallavägen 81 Stockholm 11428 Sweden

Increased biodegradability, in other words reduced environmental recalcitrance, has the potential to be an important asset in the battle against plastics pollution. It can partially mitigate global plastic leakages into the environment, which is next to their impact on climate change the biggest concern regarding plastics use. Biodegradation should be regarded as an optimal safety net in many applications and should often not be the targeted waste management option for biodegradable plastics. Biodegradability should not preclude reuse or proper recyclability, which are impactful means to reduce the carbon intensity of plastics lifecycles. Despite the added advantages, the market penetration of biodegradable plastics is only very slowly growing. Moreover, policy recommends its use only in limited applications, driven by sometimes-higher cost and limited recyclability. In this article, we posit that arguments against widespread application of biodegradable plastics are largely driven by misperceptions arising from intrinsic limitations of contemporary sustainability assessments and offer an alternative viewpoint that could compensate for this. In general, sustainability assessments fail to properly assess learning curves, often do not take littering potential into account, and are rather conservative with respect to background systems. Hence, recyclability– or better: circularity– judgements often do not resolve the paradoxical situation in which increased market shares lead to easier and more profitable recycling schemes and vice versa. Judging disruptive innovations by incorporating thermodynamics-inspired, less data-intensive, state-based methods, based on, e.g., statistical entropy analysis, into the decision support framework could allow to forecast packaging markets with performant materials that are intrinsically circular, having reduced environmental recalcitrance. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024.

关键词： Biodegradable Plastics Decision Making Statistical Entropy Sustainability Assessments

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The Role of Aldehyde-Functionalized Crosslinkers on the Property of Chitosan Hydrogels (vol 22, 2100477, 2022)

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MACROMOLECULAR BIOscience 2022年第10期22卷 2100477-2100477页

作者： Yeh, Ying-Yu Tsai, Yu-Ting Wu, Chun-Yu Tu, Ling-Hsien Bai, Meng-Yi Yeh, Yi-Cheun Institute of Polymer Science and Engineering National Taiwan University Taipei 10617 Taiwan Graduate Institute of Biomedical Engineering National Taiwan University of Science and Technology Taipei 10607 Taiwan Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan Biomedical Engineering Program Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei 10607 Taiwan Adjunct Appointment to the Department of Biomedical Engineering National Defense Medical Center Taipei 11490 Taiwan

Chitosan has been utilized as a popular biopolymer to fabricate hydrogels for biomedical applications. However, chitosan hydrogels are generally too brittle to mimic the deformability of the extracellular matrix in many tissues and organs. In particular, the role of the varied crosslinkers in determining the elasticity of chitosan hydrogels is lack of discussion. Here, three aldehyde-functionalized crosslinkers (i.e., aldehyde-modified poly(xylitol sebacate)-co-poly(ethylene glycol) (APP), glutaraldehyde (GA), and polydextran aldehyde (PDA)) are used to react with quaternized chitosan (QCS) through imine bonds to form hydrogels. The microstructures, mechanical performances, and cytocompatibility of the three hydrogels are systematically investigated. The APP/QCS hydrogels presented the best compressive and stretch properties among the three hydrogels. The mechanical property and antibacterial activity of APP/QCS hydrogels can be further modulated using varied QCS amounts, where more QCS contributed higher stiffness and stretchability as well as better bacterial inhibition to the APP/QCS hydrogels. Taken together, it is demonstrated that the inherent elastomeric characteristic of APP crosslinker provides the desirable elasticity and stretchability to QCS hydrogels compared to the other aldehyde-functionalized crosslinkers of GA and PDA. This strategy of using multivalent elastomeric crosslinkers to fabricate deformable chitosan hydrogels can expand the use of chitosan hydrogels in tissue engineering applications.

关键词： antibacterial property chitosan elasticity hydrogels stretchability

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Development of multifunctional polypropylene nonwoven fabric by radiation induced grafting of TiO2 nanoparticles and trifluoroethyl methacrylate for protective textile applications

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Materialia 2022年 21卷

作者： Thinkohkaew, Korlid Piroonpan, Thananchai Jiraborvornpongsa, Noppakhate Potiyaraj, Pranut Multidisciplinary Program in Petrochemistry and Polymer Science Faculty of Science Chulalongkorn University Bangkok10330 Thailand Center of Radiation Processing for Polymer Modification and Nanotechnology Department of Materials Science Faculty of Science Kasetsart University Bangkok10990 Thailand Department of Materials Science Faculty of Science Chulalongkorn University Bangkok10330 Thailand Metallurgy and Materials Science Research Institute Chulalongkorn University Soi Chula 12 Phayathai Road Patumwan Bangkok10330 Thailand Center of Excellence on Petrochemical and Materials Technology Chulalongkorn University Bangkok10330 Thailand

Currently, textile materials with multifunctional properties have considerably attracted more and more attention in scientific community. In this work, multi-properties of polypropylene (PP) spunbond nonwoven fabric including high hydrophobicity, antibacterial, and UV protection were successfully improved by grafting of 2,2,2-Trifluoroethyl methacrylate (TFEM) and titanium dioxide (TiO2) onto the fabrics with gamma irradiation as an alternative to the conventional chemical method. Prior to grafting procedure, the TiO2 nanoparticle was primarily functionalized with maleic anhydride (MAH) to facilitate interaction between surfaces. Then, the modified TiO2 nanoparticle and TFEM were grafted onto the fabric via gamma irradiation. The physicochemical characteristics of modified TiO2 and grafted fabric were investigated. The results demonstrated that the modified TiO2 offered an excellent surface reaction between PP spunbond. Additionally, the grafted fabrics presented astoundingly high water contact angle at about 120 °, UV resistance with UPF (UV protection factor) value of 122–124, as well as an obvious occurrence of inhibition zone on antibacterial test. It was noteworthy that the grafted fabric in this work would have an attractive application as protective clothing for practically use in medical, industrial, and outdoor applications. © 2022 Acta Materialia Inc.

关键词： Titanium dioxide

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The effects of various ratios of hybrid filler to rubber vulcanisates properties based on passenger car tyre tread compounds

The effects of various ratios of hybrid filler to rubber vul...

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Research, Invention, and Innovation Congress, RI2C 2019

作者： Thongsaen, Chatchatree Sae-Oui, Pongdhorn Sirisinha, Chakrit Polymer science and technology program Department of Chemistry Faculty of Science Mahidol University Bangkok10400 Thailand PathumThani12120 Thailand Faculty of Science Mahidol University Nakhon Pathom73170 Thailand

ISBN: (纸本)9783035716726

Solution styrene-butadiene rubber (SSBR) reinforced by hybrid fillers of carbon black (CB) and silica (PSi) was prepared with various CB/PSi ratios. Rheological and mechanical properties of rubber compounds and vulcanisates were investigated. Results of compounds demonstrate that, with increasing CB fraction, increases in the magnitude of the Payne effect and Mooney viscosity were found. On the contrary, with increased loading of PSi, increases in optimum cure time (tc90) and cure torque difference were evidenced. The results suggest superiority in filler dispersion level and cure efficiency in the systems filled with high PSi fraction due to the presence of Bis[3-(triethoxysilyl)propyl] tetrasulphide (TESPT or Si-69) as a silane coupling agent. As for vulcanisate properties, the systems with increased PSi fraction exhibit enhancement in mechanical strength and elastic contribution, which are in good agreement with rubber compound properties. Also, the decrease in loss factor at 60 °C was observed with increasing PSi fraction, suggesting the desirable reduction in rolling resistance of tyre tread. © 2020 Trans Tech Publications Ltd, Switzerland.

关键词： Silica

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Electrospun Aligned PCL/Gelatin Scaffolds Mimicking the Skin ECM for Effective Antimicrobial Wound Dressings

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Advanced Fiber Materials 2023年第1期5卷 235-251页

作者： Erfan Rezvani Ghomi Rajamani Lakshminarayanan Vijila Chellappan Navin Kumar Verma Amutha Chinnappan Rasoul Esmaeely Neisiany Kottaiswamy Amuthavalli Zhi Sheng Poh Brandon Han Siang Wong Nileshkumar Dubey Roger Narayan Seeram Ramakrishna Department of Mechanical Engineering Center for Nanotechnology and SustainabilityNational University of SingaporeSingapore 117581Singapore Ocular Infections and Antimicrobials Research Group Singapore Eye Research InstituteThe Academia20 College RoadDiscovery TowerSingapore 169856Singapore Institute of Materials Research and Engineering(IMRE) Agency for Science Technology and Research(A*STAR)#08‑032 Fusionopolis WayInnovisSingapore 138634Singapore Lee Kong Chian School of Medicine Nanyang Technological University SingaporeClinical Sciences Building11 Mandalay RoadSingapore 308232Singapore Department of Pharmacy National University of Singapore18 Science Drive 4Singapore 117543Singapore Academic Clinical Program in Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore 169857Singapore National Skin Centre 1 Mandalay RoadSingapore 308205Singapore Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***Iran Faculty of Dentistry National University of SingaporeSingapore 119085Singapore ORCHIDS:Oral Care Health Innovations and Designs Singapore National University of SingaporeSingaporeSingapore 119085Singapore Department of Biomedical Engineering University of North Carolina at Chapel HillChapel HillNC 27514USA

Bacterial infections and multidrug-resistant bacteria are major health burdens in wound *** antimicrobial agents,e.g.,ε-polylysine(ε-PL),provide a broad spectrum of antibacterial properties and support dermal cell ***,ε-PL was incorporated into polycaprolactone(PCL)/gelatin electrospun scaffolds collected at varying rotation ***,the samples were crosslinked using dopamine hydrochloride to provide highly proliferative dressings with broad antimicrobial *** morphological study showed that the electrospun wound dressings were smooth,continuous,and bead-free,with a mean diameter ranging from 267±7 to 331±8 nm for all random and aligned *** fiber alignment of the electrospun PCL/gelatin scaffolds improved their tensile strength and ***,nanofiber mats are highly hydro-philic,which is crucial for an efficient wound *** samples also demonstrated high antimicrobial properties against common wound bacterial strains,including methicillin-resistant Staphylococcus aureus(MRSA),Staphylococcus aureus(SA),Escherichia coli(EC),Acinetobacter baumannii(AB),and Pseudomonas aeruginosa(PA).Mammalian cell prolifera-tion and morphology assays involving primary human dermal fibroblasts(hDFs)and immortalized keratinocytes(HaCaT)showed excellent biocompatibility of the electrospun mats and remarkably aligned ***,aligned mats showed more cell migration than randomly oriented mats,which is desirable for more efficient wound ***,it can be concluded that aligned PCL/gelatin mats containingε-PL are promising for potential use in wound dressings.

关键词： Electrospinning Wound healing Fiber alignment Biomaterials Nanofiber dressing Bacterial infections

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Hyaluronic Acid Microparticles Performing a Vascular Role in Heparg Spheroids

SSRN

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SSRN 2023年

作者： Park, Kyoung Hwan Ryu, Bokyeong Song, Jin Jung Shim, Hye-Eun Song, Sun-Sook Han, Ji-Seok Kim, C-Yoon Huh, Kang Moo Kang, Sun-Woong Daejeon34114 Korea Republic of Department of Polymer Science and Engineering Chungnam National University Daejeon34134 Korea Republic of Department of Veterinary Physiology College of Veterinary Medicine Konkuk University Seoul05029 Korea Republic of Department of Toxicological Evaluation and Research Korea Institute of Toxicology Daejeon34114 Korea Republic of Human and Environmental Toxicology Program University of Science and Technology Daejeon34114 Korea Republic of

Three-dimensional (3D) cell culture is a promising method for preserving the mature functions of cultured cells based on advantageous structural characteristics. Because of the convenience of manufacture, one of the most used 3D cell culture methods is spheroid culture. The successful application of spheroids requires that cells survive inside a structure and engraft at transplantation sites. In this study, we proposed new concept of spheroid formation method containing hyaluronic acid (HA) microparticles. HA microparticles fabricated by an inverse emulsion method with crosslinking reaction of HA showed micro-sized interconnected pore structures. The spheroids containing HA microparticles were uniform in size and showed higher cell migration activity in matrigel. After transplantation of spheroids into the liver of mouse, the spheroids containing HA microparticles showed a higher survival rate and albumin secretion ability than the plain spheroids. Thus, a 3D cell culture system with HA microparticles in spheroids could be a promising strategy to improve the engraftment and efficiency of cell therapy for next-generation regenerative medicine. © 2023, The Authors. All rights reserved.

关键词： Hyaluronic acid

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High‑Performance Thick Cathode Based on Polyhydroxyalkanoate Binder for Li Metal Batteries

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Advanced Fiber Materials 2024年第1期6卷 214-228页

作者： Dong Hyuk Kang Minhyuck Park Jeonghun Lee Chan Yeol Kim Jimin Park Youn‑Ki Lee Jong Chan Hyun Son Ha Jin Hwan Kwak Juhee Yoon Hyemin Kim Hyun Soo Kim Do Hyun Kim Sangmin Kim Ji Yong Park Robin Jang Seung Jae Yang Hee‑Dae Lim Se Youn Cho Hyoung‑Joon Jin Seungjin Lee Yunil Hwang Young Soo Yun KU‑KIST Graduate School of Converging Science and Technology Korea University145 Anam‑roSeongbuk‑guSeoul 02841South Korea Carbon Composite Materials Research Center Korea Institute of Science and Technology(KIST)92 Chundong‑roBongdong‑eupWanju‑gunJeollabuk‑do 55324South Korea Energy Storage Research Center Korea Institute of Science and Technology(KIST)514‑gil Hwaraong‑roSeoul 02792South Korea Program in Environmental and Polymer Engineering Inha University100 Inha‑ro Michuhol‑guIncheon 22212South Korea Advanced Analysis Data Center Korea Institute of Science and Technology(KIST)514‑gil Hwaraong‑roSeoul 02792South Korea Advanced Nanohybrids Laboratory Department of Chemistry and Chemical EngineeringInha University100 Inha‑roMichuhol‑guIncheon 22212South Korea CJ CheilJedang Corporation 55 Gwanggyo‑ro 42Beon‑gilYeongtong‑guSuwon 16495South Korea Department of Chemical Engineering Hanyang University222 Wangsimni‑roSeongdong‑guSeoul 04763South Korea Department of Integrative Energy Engineering Korea University145 Anam‑roSeongbuk‑guSeoul 02841South Korea

Thick cathodes can overcome the low capacity issues,which mostly hamper the performance of the conventional active cathode materials,used in rechargeable Li ***,the typical slurry-based method induces cracking and flaking during the fabrication of thick *** addition,a significant increase in the charge-transfer resistance and local cur-rent overload results in poor rate capabilities and cycling stabilities,thereby limiting electrode *** this study,a synergistic dual-network combination strategy based on a conductive nanofibrillar network(CNN)and a nano-bridging amor-phous polyhydroxyalkanoate(aPHA)binder is used to demonstrate the feasibility of constructing a high-performance thick *** CNN and aPHA dual network facilitates the fabrication of a thick cathode(≥250μm thickness and≥90 wt%active cathode material)by a mass-producible slurry *** thick cathode exhibited a high rate capability and excel-lent cycling *** addition,the thick cathode and thin Li metal anode pair(Li//t-NCM)exhibited an optimal energy performance,affording high-performance Li metal batteries with a high areal energy of~25.3 mW h cm^(-2),a high volumetric power density of~1720 W L^(-1),and an outstanding specific energy of~470 W h kg^(-1)at only 6 mA h cm^(-2).

关键词： Thick cathode Polyhydroxyalkanoate binder Nano-bridging Conductive nano-fibrillar network Lithium metal battery

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Lignocellulose aerogel and amorphous silica nanoparticles from rice husks

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Journal of Leather science and Engineering 2021年第1期3卷 11-17页

作者： Zichao Wei Andrew T.Smith William R.T.Tait Jingjing Liu Hao Ding Hui Wang Weixing Wang Luyi Sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsCT 06269USA Department of Chemical&Biomolecular Engineering University of ConnecticutStorrsCT 06269USA College of Materials Science and Engineering South China University of TechnologyGuangzhou 510640GuangdongChina Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640GuangdongChina Department of Biomedical Engineering University of ConnecticutStorrsCT 06269USA

Rice Husks(RHs)are one of the most abundant sources of biomass in the world due to rice *** and silica are two of the main components of RHs,which allow RHs to be applied in different *** can be partially dissolved in 1-butyl-3-methylimidazolium chloride(BMIMCl),which is a simple way of competing with the traditional extraction methods that suffer from high chemical consumption.A lignocellulose freeze gel is obtained via a cyclic liquid nitrogen freeze-thaw(NFT)***-functional self-assembled lignocellulose aerogel is obtained after CO_(2) supercritical *** on the aerogel’s special properties,two routes are developed for practical *** one hand,the aerogel is coated to exhibit a superhydrophobic property that can be applied as an absorbent for oil *** the other hand,a carbon aerogel is synthesized via a pyrolysis process,resulting in a porous amorphous *** residue after partially dissolving lignocellulose in BMIMCl is further calcined to obtain amorphous silica nanoparticles,achieving a comprehensive application of RHs.

关键词： Rice husks Lignocellulose Carbon aerogel Silica

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