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Biodegradable and Biocompatible Poly(Butylene Succinate-Co-Terephthalate)/Poly(Propylene Carbonate) Blown Films with Enhanced Compatibility, Mechanical, and Barrier Properties

SSRN

引用

SSRN 2023年

作者： Liu, Chengkai Chen, Ling Yan, Xiangyu Dong, Xianling Tian, Hanlin Pan, Hongwei Wang, Dongmei Zhao, Yan Zhang, Huiliang Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun130022 China College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao266510 China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai200438 China Jilin COFCO Biochemical Technology Co. Ltd. Changchun130033 China

In this study, a novel environment-friendly PBST/PPC-based blown film was prepared using styrene maleic anhydride (SMA) copolymer as a reactive compatibilizer to enhance the compatibility between poly(butylene succinate-co-terephthalate) (PBST) and poly(propylene carbonate) (PPC). Results of rheological testing and gel permeation chromatography (GPC) indicated that SMA reacted with PBST/PPC during melt-blending extrusion. Morphological analysis of the cryo-fractured surfaces of PBST/PPC blend showed significantly improved compatibility between PBST and PPC with the addition of SMA. Moreover, the Young's modulus, tensile strength, breaking strain, and tear strength of PBST/PPC/SMA blown films increased with an increase in SMA content. In comparison to PBST/SMA blown film without PPC, the barrier property of PBST/PPC/SMA blown films was improved. In addition, in-vitro cell experiments showed that the PBST/PPC/SMA blown film was suitable for the growth of mouse fibroblast (L929) cells. In-vitro ecotoxicity testing on mung bean plant showed that the extracts from the PBST/PPC/SMA blown film had no negative effects on the development of mung bean plant. Furthermore, degradability testing in soil also proved that the PBST/PPC/SMA blown film had good biodegradability. Thus, the PBST/PPC/SMA blown film can be used in fields, such as biomedical materials, hygienic products, food packaging, and agricultural mulch film. © 2023, The Authors. All rights reserved.

关键词： Biodegradability

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Evaluating Cost & Safety Trade-Offs in High-Pressure Proton Exchange Membrane Electrolyzer Cells (Pemecs)

SSRN

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SSRN 2023年

作者： Dang, Jing Qi, Meng Shu, Chi-Min Feng, Wei Liu, Yi Xu, Chi-Min National Yunlin University of Science and Technology Taiwan Qingdao266580 China Department of Safety Health and Environmental Engineering National Yunlin University of Science and Technology Yunlin64002 Taiwan State Key Laboratory of Fluorinated Functional Membrane Materials Zibo256401 China Shandong Dongyue Polymer Material Co. Ltd. Zibo256401 China

Proton exchange membrane electrolysis cells (PEMECs) have the potential to facilitate green hydrogen production for renewable energy utilization and carbon emission reduction. High-pressure PEMECs reduce hydrogen transportation costs while concurrently promoting hydrogen cross-membrane transport, forming hydrogen-oxygen mixtures that increase risks, thus affecting the delicate balance between cost and safety. Most prior studies emphasize reaction mechanisms, material selection, and cost, overlooking safety, even safety-economic trade-offs. To bridge this gap, we introduced a multi-optimization framework. Within this framework, a first-principle mathematical model integrates the electrolysis system process with quantitative sustainability metrics to analyze the trade-offs between economic viability and safety, as influenced by operating parameters. Optimization offers a flexible balance between cost and safety. Hydrogen production costs ranging from 2 to 10 $/Nm3 aligned with other economic findings. For practicality, standard explosion limits serve as constraints in multi-optimization. We employed non-dominated sorting genetic algorithm II (NSGA-II) and convex hull algorithm successively for Pareto solutions, with convex hull proving more accurate. We endeavored to provide a systematic understanding of the trade-off between the economic viability and safety of PEMECs by optimizing manipulation of critical parameters to achieve a delicate balance in safety and economic sustainability indicators under trade-off, thereby propelling the advancement of electrolysis technology but also fostering utilization of renewable energy, aligning with the broader global objective of decarbonization. © 2023, The Authors. All rights reserved.

关键词： Genetic algorithms

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Synthesis and characterization of nanosilica from rice husk waste Sigupai varieties endemic to Aceh

Case Studies in Chemical and Environmental Engineering

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Case Studies in Chemical and environmental engineering 2025年 11卷

作者： Dzulhijjah, Wafiq Alni Aprilia, Sri Arahman, Nasrul Barambu, Nafiu Umar Department of Chemical Engineering Universitas of Syiah Kuala Darussalam Banda Aceh 23111 Indonesia of Environmental Management Universitas Syiah Kuala Jl. Tgk. Chik Pante Kulu No. 5 Darussalam Banda Aceh 23111 Indonesia Research Center for Environmental and Natural Resources Universitas Syiah Kuala Jl. Hamzah Fansuri No. 4 Darussalam Banda Aceh 23111 Indonesia Laboratory of Polymer Science Department of Chemical Engineering Universitas of Syiah Kuala Banda Aceh Indonesia

The global demand for nanosilica is steadily rising due to its broad applications, from enhanced oil recovery to advanced membrane development. However, high costs of nanosilica posed significant economic concern to many industries. This study addresses the economic limitation of nanosilica by utilizing agricultural waste specifically Sigupai rice husks from Southwest Aceh, Indonesia. This approach not only lowers production cost but also offers an environmental solution to the rice milling by-product disposal challenge. Moreover, this research also investigated the impact of the geographical and varietal factors of rice husks on the quality and the yield of the nanosilica. By employing sol-gel method, the characteristics of nanosilica under varying calcining temperature and precipitating agents (HCl and HNO₃) were evaluated. The results indicated a high silica yield of 51.98 % with up to 95 % purity and >23 nm particle size at 800^oc calcining temperature with HNO₃ precipitation agent. These results provided a valuable insight into cost-effective, environmentally sustainable nanosilica production with implications for future applications in various industries. © 2025

关键词： Economic limitation Nanosilica Sigupai rice husk Sol-gel method

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Rheology Behavior of Polydimethylsiloxane/Boron Nitride Sheets/Alumina Spheres Ternary Suspensions: Designing for Extrudable Thermal Anisotropic Interface Materials

SSRN

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SSRN 2024年

作者： Wang, Zefan Cui, Wenzhi Zhang, Chunbo Shenzhen University School of Chemistry and Environmental Engineering No. 3688 Nanhai Avenue Nanshan District Shenzhen518060 China Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced Technology Chinese Academy of Science Shenzhen518055 China Advanced Rheology Institute Department of Polymer Science and Engineering Frontiers Science Center for Transformative Molecules State Key Laboratory for Metal Matrix Composite Materials Shanghai Jiao Tong University Shanghai200240 China Research Institute of Chemical Industry Co. Ltd. Beijing100013 China

To achieve effective thermal management of electronic devices, anisotropic thermal interface materials (TIMs) with high out-plane thermal conductivity have received increasing attentions. Many methods have been proposed from academia but little could be used for the industry in large scale. Accompanied with strong shearing effect, extruding could become an effective way manipulating the orientation of anisotropic fillers and promoting the thermal conductivity for TIMs in the flow direction. The combination of fillers with different shapes and size significant affect the rheological behavior and processibility for the extrudable TIMs. In this work, we presented a detailed rheological study on binary or trinary TIMs made up by unentangled polydimethylsiloxane (PDMS), boron nitride sheets (BNs) and alumina sphere (AlS) with different sizes. The viscosities at yield point (ηY） and high shearing rate (ηL） are found increasing with the increase of BNs content as expected. The introduction of micro-size of AlS barely affects the rheological behavior of the composites since BNs are well-separated by AlS particles. On the other hand, the physical scenario could be completely different if the third component are replaced into nano-sized particles, which could act as a new continuous matrix for BNs. The ternary composites exhibit relatively low modulus and wide linear viscoelastic region, that could remain stable under gravity. Our finding provides a new approach for the production of extrudable TIMs. © 2024, The Authors. All rights reserved.

关键词： Alumina

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Rheology Behavior of Polydimethylsiloxane/Boron Nitride Sheets/Alumina Spheres Ternary Suspensions: Designing for Extrudable Thermal Anisotropic Interface Materials

SSRN

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SSRN 2024年

关键词： Alumina

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Correction to "Chiral Selectivity between Pd12Ala24 Metal-Organic Cages Containing Endohedral Chiral Ligands and Their Chiral Counterions" (ACS Applied Materials and Interfaces (2025) 17:10 (16213-16222) DOI: 10.1021/acsami.4c22457)

引用

ACS Applied Materials and Interfaces 2025年第15期17卷 23429页

作者： Bahareh Afsari Ehsan Raee Bingqing Liu Ruibo Hu Kexing Xiao Xiaopeng Li Nita Sahai Tianbo Liu School of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 United States Department of Chemistry University of South Florida Tampa Florida 33620 United States College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China

In our original article, Figure S8 (CD spectra) of the Supporting Information was conducted by Ruibo Hu under Dr. Nita Sahai’s supervision at the School of polymer science and polymer engineering, University of Akron, but their contributions were inadvertently omitted from the author list. To correct this, Ruibo Hu and Nita Sahai have been added to the author list. This correction does not affect the study’s conclusions, and all other aspects remain unchanged. © 2025 American Chemical Society.

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Anion exchange resin installation in reducing nitrate nitrogen and phosphate phosphorus concentrations: The backwater of Turawa reservoir, Poland case study

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Ecohydrology and Hydrobiology 2025年

作者： Gruss, Łukasz Cyganowski, Piotr Tomczyk, Paweł Wiatkowski, Mirosław Kasperek, Robert Pulikowski, Krzysztof Rosik-Dulewska, Czesława Kinas, Sebastian Skorulski, Witold Institute of Environmental Engineering Wrocław University of Environmental and Life Sciences pl. Grunwaldzki 24 Wrocław 50-363 Poland Department of Process Engineering and Technology of Polymer and Carbon Materials Faculty of Chemistry Wrocław University of Science and Technology Wyb. S Wyspianskiego 27 Wrocław 50-370 Poland Institute of Environmental Engineering Polish Academy of Sciences in Zabrze Marii Skłodowskiej-Curie 34 Zabrze 41-819 Poland Art Strefa Witold Skorulski ul. Śniadeckich 45/6 Wrocław 51-604 Poland

Eutrophication severely impacts water quality, impeding tourism, recreation, and rendering it unfit for consumption, swimming, and fishing. To address this challenge, innovative methods for nutrient inactivation in lakes and reservoirs are imperative in restoring surface water. In this context, we investigated whether the technology based on ion exchange (IX) resins can decrease the concentrations of nitrate-nitrogen (NO₃-N) and phosphate-phosphorus (PO₄-P) in the water in the vicinity of the anion exchange resin installation located in the backwater area of a reservoir. The Anion Exchange Resin Installation will be referred to as the Water Quality Improvement Installation (WQII) in this article. We also aimed to identify the factors that affect water quality in the water in the vicinity of the WQII area. Our research area was the Turawa eutrophic reservoir located in south-western Poland (Central Europe). Our results indicate that the WQII effectively lowers the concentrations of NO₃-N and PO₄-P in the tested water. environmental factors have negligible influence on NO₃-N and PO₄-P concentrations in the water in the vicinity of the WQII. An inversely proportional relationship between the removal of NO₃-N and PO₄-P indicates that the configuration of the regeneration system of each column is appropriate. The WQII effectively decreases NO₃-N and PO₄-P concentrations during periods of cyanobacterial blooms in the backwater area of the reservoir. This novel WQII utilizing IX technology, emerges as a promising solution for remediating eutrophic water aligning with the Water Framework Directive, assuming the achievement of good water status of water bodies. © 2024

关键词： environmental protection Eutrophication Reservoir restoration Surface water quality Water pollution Water treatment

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Highly Deformable Rigid Glassy Conjugated polymeric Thin Films

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Advanced Functional Materials 2023年第50期33卷

作者： Wang, Yunfei Zhang, Song Freychet, Guillaume Li, Zhaofan Chen, Kai-Lin Liu, Chih-Ting Cao, Zhiqiang Chiu, Yu-Cheng Xia, Wenjie Gu, Xiaodan School of Polymer Science and Engineering Center for Optoelectronic Materials and Devices The University of Southern Mississippi HattiesburgMS39406 United States National Synchrotron Light Source II Brookhaven National Lab UptonNY11973 United States University Grenoble Alpes CEA LETI GrenobleF-38000 France Department of Civil Construction and Environmental Engineering North Dakota State University FargoND58108 United States Department of Chemical Engineering National Taiwan University of Science and Technology Taipei106 Taiwan Department of Aerospace Engineering Iowa State University AmesIA50011 United States

Wearable devices benefit from the use of stretchable conjugated polymers (CPs). Traditionally, the design of stretchable CPs is based on the assumption that a low elastic modulus (E) is crucial for achieving high stretchability. However, this research, which analyzes the mechanical properties of 65 CP thin films, challenges this notion. It is discovered that softness alone does not determine stretchability;rather, it is the degree of entanglement that is critical. This means that rigid CPs can also exhibit high stretchability, contradicting conventional wisdom. To inverstigate further, the mechanical behavior, electrical properties, and deformation mechanism of two model CPs: a glassy poly(3-butylthiophene-2,5-diyl) (P3BT) with an E of 2.2 GPa and a viscoelastic poly(3-octylthiophene-2,5-diyl) (P3OT) with an E of 86 MPa, are studied. Ex situ transmission X-ray scattering and polarized UV–vis spectroscopy revealed that only the initial strain (i.e., © 2023 Wiley-VCH GmbH.

关键词： Conjugated polymers

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Regioisomeric effects regulating the physicochemical properties of complex copolymers in thin films

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European polymer Journal 2025年 234卷

作者： Lee, Hyeji Kim, Seungjun Ko, Yun Hee Park, Juyoung Lee, Dahye Ku, Yejin Ahn, Chanjae Kwak, Yoonhyun Kim, Minsang Lee, Jin-Kyun Kim, Myungwoong Department of Chemistry and Chemical Engineering Inha University Incheon22212 Cuba Program in Environment and Polymer Engineering Inha University Incheon22212 Cuba Department of Polymer Science and Engineering Inha University Incheon22212 Cuba Material Research Center Samsung Advanced Institute of Technology Samsung Electronics Suwon16677 Cuba

We demonstrate that minimal alterations to the chemical structure of a hydroxystyrene (HOST)-containing terpolymer lead to significant changes in its physicochemical properties, which in turn govern photolithographic pattern formation in chemical amplification mechanism. While the structures of the three repeating units, their compositions, and the molecular weight characteristics of the terpolymers were controlled to be similar, the location of the phenolic OH groups was adjusted by copolymerizing o-, m-, and p-acetoxystyrene, subsequently transformed into o-, m-, and p-HOST through deacetylation. In the studies to examine the physicochemical properties of the copolymers, the copolymer with p-HOST showed dissolution rate in n-butyl acetate (nBA) of ≈ 15 nm/s, which was lower than that of copolymer with m-HOST (≈ 18 nm/s) and o-HOST (≈ 27 nm/s), further showing high linear correlation with the Hansen space distance between the copolymers and nBA. Moreover, the acid diffusions in the thin film, which plays a significant role in acid-catalyzed deprotection of the copolymers to solubility modulation, was affected by the location of the phenolic OH: the fastest and slowest acid diffusions were observed in the copolymers of p-HOST and o-HOST, respectively. The regioisomerism further affects the photolithographic performance collectively: (i) in contrast curve, light energy required to change the solubility was in order of p-HOST m-HOST > o-HOST, highlighting the significance of chemical structure design and the fundamental understanding of structure–property relationships. © 2025 Elsevier Ltd

关键词： Physicochemical properties

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Non-trivial Topological Surface States Regulation of 1T-OsCoTe2 Enables Selective C―C Coupling for Highly Efficient Photochemical CO2 Reduction Toward C2+ hydrocarbons

arXiv

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arXiv 2024年

作者： Wang, Kangwang Wu, Mingjie Yu, Peifeng Garces, Hector F. Liang, Ying Li, Longfu Zeng, Lingyong Li, Kuan Zhang, Chao Yan, Kai Luo, Huixia School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Key Lab of Polymer Composite & Functional Materials Sun Yat-sen University Guangzhou510275 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China School of Engineering Brown University 182 Hope Street Providence United States The Basic Course Department Guangzhou Maritime University Guangzhou510800 China School of Environmental Science and Engineering Sun Yat-sen University Guangzhou510275 China

Despite ongoing research, the rational design of non-trivial topological semimetal surface states for the selective photocatalytic CO2 conversion into valuable products remains full of challenges. Herein, we present the synthesis of lattice-matched 1T-OsCoTe2 for the photoreduction upgrading of CO2 to tri-carbon (C2) alkane (propane, C2H2) by the integration of experimental work and theory prediction/calculation. Experimental studies suggested a high electron-based selectivity of 71.2% for C3H8 and an internal quantum efficiency of 54.6% at 380 nm. In-situ X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy demonstrated that Co and Os atoms coordinated with Te atoms enable an efficient Os―Te―Co electron transfer to activate the generation of *CH3, *CHOCO and *CH2OCOCO. Density functional theory calculations further confirmed Os―Te―Co electron bridging on the improved CO2 conversion kinetics. To our knowledge, this is the first report suggesting the role of Os atoms in accelerating the photocatalytic CO2 conversion activity of the topological semimetal 1T-OsCoTe2 Copyright © 2024, The Authors. All rights reserved.

关键词： Surface states

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