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Arab Gulf Journal of Scientific Research 2023年第3期41卷 416-426页

作者： Ezeamaku, Uchenna Luvia Ezekannagha, Chinyere Eze, Ochiagha I. Odimegwu, Nkiru Nwakaudu, Angela Okafor, Amarachukwu Ekuma, Innocent Onukwuli, Okechukwu Dominic Department of Polymer and Textile Engineering Federal University of Technology Owerri Nigeria Department of Chemical Engineering Madonna University Nigeria Akpugo Campus Enugu Nigeria Department of Food Science and Technology Federal University of Technology Owerri Nigeria Department of Biomedical Engineering Federal University of Technology Owerri Nigeria Department of Biomedical Engineering Alex Ekwueme Federal University Teaching Hospital Abakaliki Nigeria Department of Chemical Engineering Nnamdi Azikiwe University Awka Nigeria

Purpose: The impact of potassium permanganate (KMnO4) treatment on the tensile strength of an alkali-treated pineapple leaf fiber (PALF) reinforced with tapioca-based bio resin (cassava starch) was studied. Design/met... 详细信息

Purpose: The impact of potassium permanganate (KMnO₄) treatment on the tensile strength of an alkali-treated pineapple leaf fiber (PALF) reinforced with tapioca-based bio resin (cassava starch) was studied. Design/methodology/approach: The PALF was exposed to sodium hydroxide (NaOH) treatment in varying concentrations of 2.0, 3.7, 4.5 and 5.5g prior to the fiber treatment with KMnO₄. The treated and untreated PALFs were reinforced with tapioca-based bio resin. Subsequently, they were subjected to Fourier transform infrared (FTIR) and tensile test analysis. Findings: The FTIR analysis of untreated PALF revealed the presence of O-H stretch, N-H stretch, C=O stretch, C=O stretch and H-C-H bond. The tensile test result confirmed the highest tensile strength of 35N from fiber that was reinforced with 32.5g of cassava starch and treated with 1.1g of KMnO₄. In comparison, the lowest tensile strength of 15N was recorded for fiber reinforced with 32.5g of cassava starch without KMnO₄ treatment. Originality/value: Based on the results, it could be deduced that despite the enhancement of bioresin (cassava starch) towards strength-impacting on the fibers, KMnO₄ treatment on PALF is very vital for improved tensile strength of the fiber when compared to untreated fibers. Hence, KMnO₄ treatment on alkali-treated natural fibers preceding reinforcement is imperative for bio-based fibers. © 2022, Uchenna Luvia Ezeamaku, Chinyere Ezekannagha, Ochiagha I. Eze, Nkiru Odimegwu, Angela Nwakaudu, Amarachukwu Okafor, Innocent Ekuma and Okechukwu Dominic Onukwuli.

关键词： chemical treatment Pineapple leaf fiber Potassium permanganate Reinforcement Tapioca-based bioresin Tensile strength

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Natural dyes in textile printing: parameters, methods, and performance

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Environmental science and Pollution Research 2024年第35期31卷 47552-47583页

作者： Repon, Md. Reazuddin Islam, Tarekul Paul, Tamal Krishna Jurkonienė, Sigita Haji, Aminoddin Shukhratov, Sharof Toki, Gazi Farhan Ishraque Laboratory of Plant Physiology Nature Research Centre Akademijos g. 2 Vilnius08412 Lithuania Department of Production Engineering Faculty of Mechanical Engineering and Design Kaunas University of Technology Studentų 56 Kaunas51424 Lithuania Department of Textile Engineering Daffodil International University Dhaka1216 Bangladesh ZR Research Institute for Advanced Materials Sherpur2100 Bangladesh Department of Materials Science and Engineering King Fahd University of Petroleum and Minerals Dhahran31261 Saudi Arabia Department of Textile Engineering Faculty of Mechanical Engineering Khulna University of Engineering & ampTechnology Khulna9203 Bangladesh Department of Textile Engineering Yazd University Yazd Iran Department of Technological Education Fergana State University Fergana150100 Uzbekistan State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai201620 China National Institute of Textile Engineering and Research University of Dhaka Dhaka1000 Bangladesh

In recent years, consumer preferences have begun to turn back to natural dyes, whereas synthetic dyes have been pushed into the background over the previous 60 years. This is a result of increased knowledge of the potential hazards associated with the creation of synthetic dyes, which use raw materials derived from petrochemicals and involve intense chemical interactions. Such dyes need a lot of energy to produce, and their negative effects on the environment increase pollution. It has been discovered that several of these dyes, particularly the azo-based ones are carcinogenic. On the contrary, natural dyes are getting more attention from scientists and researchers as a result of their several advantages like being eco-friendly, biodegradable and renewable, sustainable, available in nature, having no disposal problems, minimizing the consumption of fossil fuel, anti-bacterial, insect repellent, and anti-allergic, anti-ultraviolet, intensify dyeing and finishing process efficiency, less expensive, and no adverse effects on human health and environment. However, there are also some drawbacks, like poor fastness properties, natural dye printing for bulk production, difficulties in reproducibility of shades, and so forth. Despite all these limitations, the demand for natural dyes is increasing significantly in textile industries because they offer far more safety than synthetic dyes. This study provides an overall concept of the natural dyes in textile printing. It illustrates parameters of printing performance, methods, and techniques of extraction of natural dyes, printing methods, and printing of natural and synthetic fibers. Finally, this study describes the challenges and future prospects of natural dyes in textile printing. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Textile industry

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Anti-fatigue ionic gels for long-term multimodal respiratory abnormality monitoring

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Journal of Materials science & Technology 2023年第20期151卷 99-108页

作者： Xiang-Jun Zha Jian-Bo Li Guo-Peng Liang Jun-Hong Pu Zhong-Wei Zhang Bo Wang Ji-Gang Huang Jin Jia Xin Zhao Kai-Qi Pan Mei-Ling Dong Kai Ke Yan Kang Wei Yang College of Polymer Science and Engineering Sichuan UniversityState Key Laboratory of Polymer Materials EngineeringChengdu 610065SichuanChina Department of Critical Care Medicine West China HospitalSichuan University37 Guo Xue Xiang StChengdu 610041SichuanChina Laboratory of Liver Transplantation Frontiers Science Center for Disease-Related Molecular NetworkWest China Hospital of Sichuan UniversityChengdu 610041SichuanChina Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine School of Chemical EngineeringUNSW SydneyNSW 2052Australia School of Mechanical Engineering Sichuan UniversityChengdu 610065SichuanChina

Wearable electronics integrated with stretchable sensors are considered a promising and non-invasive strategy to monitor respiratory status for health ***,long-term and stable monitoring of respiratory abnormality is still a grand ***,we report a facile one-step thermal stretching strategy to fabricate an anti-fatigue ionic gel(AIG)sensor with high fatigue threshold(0=1130 J m^(–2)),high stability(>20,000 cycles),high linear sensitivity,and recyclability.A multimodal wearable respiratory monitoring system(WRMS)developed with AIG sensors can continuously measure respiratory abnormality(single-sensor mode)and compliance(multi-sensor mode)by monitoring the movement of the ribcage and abdomen in a long-term *** single-sensor mode,the respiratory frequency(Fr),respiratory energy(Er),and inspire/expire time(I/E ratio)can be extracted to evaluate the respiratory status during sitting,sporting,and ***,the multi-sensors mode is developed to evaluate patientventilator asynchrony through validated clinical criteria by monitoring the incongruous movement of the chest and abdomen,which shows great potential for both daily home care and clinical applications.

关键词： Anti-fatigue ionic gels Wearable electronics Multimodal respiratory monitoring

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Thermoplastic Vulcanizates of PBS- EVA and Cellulose Nanocrystal: a Comprehensive Experimental Study on the Mechanical, Rheological and Shape Memory Behavior

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Journal of polymers and the Environment 2025年 1-17页

作者： Nourany, Mohammad Aminyan, Reyhaneh Fahimi, Mahtab Kargaran, Farshad Alghazali, Sundus Mahdi Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran Department of Polymer Engineering Petroleum and Chemical Engineering Faculty Science and Research Branch Islamic Azad University Tehran Iran Department of Polymer Processing Iran Polymer and Petrochemical Institute Tehran Iran Department of Prosthetics and Orthopedics Engineering University of Kerbala Kerbala Iraq

Poly (butylene succinate) (PBS) is among the least studied biodegradable polyesters, where its high crystallinity and low extensibility had limited its wide- spread application for packaging. In this work, we designed a series of thermoplastic elastomers (TPEs) and vulcanizates (TPVs) based on PBS and ethylene vinyl acetate (EVA) with a focus on its modulus ( $$\:E$$ ) and elongation at break ( $$\:{\epsilon\:}_{b}$$ ). The TPEs showed poor mechanical performance and using dicumyl peroxide (DCP), applied directly (D) and as a masterbatch with EVA (M), resulted in superior mechanical performance with the TPV based on the PBS: EVA composition of 90: 10-D showing the highest $$\:{\epsilon\:}_{b}$$ of 637.6% compared to the $$\:{\epsilon\:}_{b}$$ of 108.1% for PBS. The $$\:E$$ value of the TPV was 139.1 MPa compared to 353.2 MPa for PBS, which was due to the presence of EVA rubber. However, presence of 2% cellulose nanocrystal (CNC) increased $$\:E$$ to 225.9 MPa with the $$\:{\epsilon\:}_{b}$$ of 463%. Both PBS and the optimal TPVs showed high shape fixity even at 25°C due to its high crystallinity, while the TPVs and especially, the TPV- CNC (2.0%) showed higher recovery ratios caused by formation of an elastic 3D network of both the cured EVA droplets and CNCs.

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A tough,antibacterial and antioxidant hydrogel dressing accelerates wound healing and suppresses hypertrophic scar formation in infected wounds

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Bioactive Materials 2024年第4期34卷 269-281页

作者： Xiaoqing Liu Yiming Sun Jie Wang Yongyuan Kang Zhaolong Wang Wangbei Cao Juan Ye Changyou Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou310058China Eye Center The Second Affiliated Hospital of Zhejiang UniversitySchool of MedicineHangzhou310009China Center for Healthcare Materials Shaoxing InstituteZhejiang UniversityShaoxing312099China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan030000China

Wound management is an important issue that places enormous pressure on the physical and mental health of patients,especially in cases of infection,where the increased inflammatory response could lead to severe hypertrophic scars(HSs).In this study,a hydrogel dressing was developed by combining the high strength and toughness,swelling resistance,antibacterial and antioxidant *** hydrogel matrix was composed of a double network of polyvinyl alcohol(PVA)and agarose with excellent mechanical *** polylysine(HBPL),a highly effective antibacterial cationic polymer,and tannic acid(TA),a strong antioxidant molecule,were added to the hydrogel as functional *** of antibacterial and antioxidant properties of the hydrogel confirmed the full play of the efficacy of HBPL and *** the in vivo studies of methicillin-resistant Staphylococcus aureus(MRSA)infection,the hydrogel had shown obvious promotion of wound healing,and more profoundly,significant suppression of scar *** to the common raw materials and simple preparation methods,this hydrogel can be mass produced and used for accelerating wound healing while preventing HSs in infected wounds.

关键词： Hydrogel dressing Hypertrophic scars Wound healing Bacterial infection ROS-scavenging

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Understanding the stability of advanced inorganic-organic hybrid thin films for advanced resist applications 41

Understanding the stability of advanced inorganic-organic hy...

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Advances in Patterning Materials and Processes XLI 2024

作者： Le, Dan N. Chu, Thi Thu Huong Kim, Jin-Hyun Veyan, Jean-Francois Lee, Won-Il Tiwale, Nikhil Lee, Minjong Choi, Seungsoo Woo, Jihoon Nam, Chang-Yong Choi, Rino Kim, Jiyoung Department of Materials Science and Engineering University of Texas at Dallas RichardsonTX75080 United States Department of Materials Science and Chemical Engineering Stony Brook University Stony BrookNY11794 United States Center for Functional Nanomaterials Brookhaven National Laboratory UptonNY11973 United States Department of Electrical and Computer Engineering University of Texas at Dallas RichardsonTX75080 United States Program in Enviromental and Polymer Engineering Inha University Incheon22212 Korea Republic of Department of Materials Science and Engineering Inha University Incheon22212 Korea Republic of

ISBN: (纸本)9781510672208

In this study, we focus on examining the stability of Al-based inorganic-organic hybrid thin films deposited through the molecular atomic layer deposition (MALD) process in ambient environment. Our observations reveal an initial reduction in material thickness within the first 3 days, followed by a period of stability. XPS analysis is employed to further investigate the chemical alternations in the aged Al-based hybrid thin films, revealing an increase in C=O species as well as overall oxygen content in the material. We also evaluate the effects of atmospheric exposure on the sensitivity of the Al-based hybrid thin films using electron flood exposure. This study aims to enhance the understanding of the stability of a vapor-phase synthesized hybrid thin film system for advanced resist applications. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Atomic layer deposition

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Plastic‑Swelling Preparation of Functional Graphene Aerogel Fiber Textiles

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Advanced Fiber Materials 2023年第6期5卷 2016-2027页

作者： Yuxiang Qi Yuxing Xia Peng Li Ziqiu Wang Xin Ming Bo Wang Kai Shen Gangfeng Cai Kaiwen Li Yue Gao Yingjun Liu Chao Gao Zhen Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Centre for X PolymersDepartment of Polymer Science and EngineeringZhejiang University38 Zheda RoadHangzhou 310027People’s Republic of China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032People’s Republic of China

Graphene aerogel fibers(GAFs)combine the advantages of lightweight,high specific strength and conductivity of graphene,showing great potential in multifunctional wearable ***,the fabrication and application of GAF textiles are considerably limited by the low structural robustness of ***,we report a plastic-swelling method to fabricate GAF textiles with high performance and *** textiles were achieved by plastic-swelling,the prewoven graphene oxide fiber(GOF)tow *** near-solid plastic-swelling process allows GAFs in textiles to maintain high structural order and controllable density,and exhibit record-high tensile strength up to 103 MPa and electrical conductivity up to 1.06.104 S m−1 at the density of 0.4 g cm−*** textiles exhibit high strength of 113 MPa,multiple electrical and thermal functions,and high porosity to serve as host materials for more functional *** plastic-swelling provides a general strategy to fabricate diverse aerogel fiber textiles,paving the road for their realistic application.

关键词： Aerogel fiber Plastic-swelling Smart textiles Graphene

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Initial Exploration and Understanding of Parameters for Successful Enterprise Architecture Implementation 11

Initial Exploration and Understanding of Parameters for Succ...

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11th International Conference on ICT for Smart Society, ICISS 2024

作者： Khairina, Dyna Marisa Purwanto, Purwanto Nugraheni, Dinar Mutiara Kusumo School of Postgraduate Studies Universitas Diponegoro Program in Information Systems Semarang Indonesia Universitas Diponegoro Faculty of Engineering Department of Chemical Engineering Semarang Indonesia Universitas Diponegoro Faculty of Science and Mathematics Department of Informatics Semarang Indonesia

ISBN: (纸本)9798350389654

This study provides an initial exploration and further understanding of the factors that are parameters in evaluating the success of Enterprise Architecture (EA) implementation. An evaluation process is needed to ensure that the EA project implementation provides effectiveness, efficiency, and feasibility of the EA information system as well as assessing previous project experience to avoid future EA project risks. The research aims to present a Systematic Literature Review based on the stages of identification, screening, eligibility, and inclusion so that 14 main articles are selected for review with strong actual relevance. The study results provide insights and references that can be used to further explore key factors in evaluating the success of EA implementation in the future. It was found that there were ten factors that most influenced the evaluation of the success of EA implementation and it was concluded that two potential factors were the most influential and required further exploration in evaluating the success of EA implementation which could be applied in various sectors/dimensions. This study contributes as an initial reference for overcoming problems in investigating and exploring the factors that influence the success of EA implementation as an effort to assess the success of achieving future organizational goals. © 2024 IEEE.

关键词： Enterprise Architecture Parameters Success Factors Systematic Literature Review

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Sensitivity improvement of fluoroalkylated EUV resist with electron-rich vinyl units 41

Sensitivity improvement of fluoroalkylated EUV resist with e...

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Advances in Patterning Materials and Processes XLI 2024

作者： Kim, Gayoung Ku, Yejin Lee, Jin-Kyun Kim, Jiho Park, Byeong-Gyu Lee, Sangsul Jang, Yu Ha Jung, Byung Jun Koh, Chawon Nishi, Tsunehiro Kim, Hyun-Woo Program in Environment and Polymer Engineering Inha University Incheon22212 Korea Republic of Department of Polymer Science and Engineering Inha University Incheon22212 Korea Republic of Pohang Accelerator Laboratory Postech Pohang37673 Korea Republic of Department of Materials Science and Engineering University of Seoul Seoul02504 Korea Republic of Samsung Electronics Co. Ltd. Semiconductor R&d Center Suwon18448 Korea Republic of Department of Materials Science and Engineering Yonsei University Seoul03722 Korea Republic of

ISBN: (纸本)9781510672208

In this study, we present a method to enhance the sensitivity of fluorinated EUV resists by leveraging the rapid coupling reaction between electrophilic carbon radicals and electron-rich alkenes. To validate the impact of the vinyl groups, DVS-HNF was synthesized by introducing fluorinated alkyl chains and silyl vinyl functional groups into the model compound. Additionally, TMS-HNF and EDMS-HNF, which do not contain a vinyl moiety, were synthesized for comparison. To evaluate the patterning properties of the three materials, e-beam lithography experiments were conducted, resulting in the formation of negative-tone patterns for all three materials. Comparing sensitivities, DVS-HNF with two vinyl moieties exhibited the most excellent sensitivity, confirming the effective collaboration between fluorinated alkyl radicals and vinyl groups. After performing an EUV lithography experiment on DVS-HNF, it was confirmed that a 30 nm negative-tone pattern was successfully formed with excellent sensitivity. These results substantiate the potential of the single-component molecular resist for high performance EUV lithography. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Extreme ultraviolet lithography

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Long-Range Electronic Effect-Promoted Ring-Opening polymerization of Thioctic Acid to Produce Biomimetic Ionic Elastomers for Bioelectronics

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CCS Chemistry 2024年第3期6卷 761-773页

作者： Hongfei Huang Huijing Wang Lijie Sun Ruohan Zhang Luzhi Zhang ZekaiWu Yaxuan Zheng Yang Wang Wei Fu Youwei Zhang Rasoul Esmaeely Neisiany Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620 Institute of Pediatric Translational Medicine Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127 Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***

Poly(disulfide)s have been widely used in flexible wearable electronics,smart materials,and drug *** synthesis of poly(disulfide)s usually utilizes external stimuli or toxic initiators to promote the ***,we indicated that the long-range electronic effect can significantly alter the reactivity of the disulfide ***,we established deprotonation-promoted ring-opening polymerization of thioctic acid(TA)as a highly effective and simple method to synthesize poly(disulfide)s due to the long-range electronic effect and nucleophilic *** external stimuli and initiators,simple mixing of TA and deprotonation reagent,choline bicarbonate,in different ratios at room temperature rapidly produced a series of high molecular weight(up to 772 kDa)ionic liquid crystal poly(disulfide)s elastomers with room temperature self-healing ability,adjustable conductivity(2.39×10^(−2)∼0.28×10^(−2)S m^(−1)),degradability,biocompatibility,antibacterial property,and tissue-like softness(Young’s moduli ranging from 18.2±6.0 to 111.1±36.7 kPa).The experiments and density functional theory calculations also revealed the principle of long-range electronic effect to establish a new synthetic strategy of poly(disulfide)s with superior properties favorable for bioelectronics.

关键词： self-healing elastomers thioctic acid ionic liquid bioelectronics

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