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Upcycling of Poly(butylene adipate-co-terephthalate)into Dual Covalent Adaptable Networks through Chain Breaking-Crosslinking Strategy

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Chinese Journal of Polymer Science 2024年第10期42卷 1505-1513,I0011页

作者： Bin-Bo Wang Rong Huang Xin Wang Tao Jiang Yi Wang Shuai Du Fa-Lin Li Jin Zhu Song-Qi Ma Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi214122China Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Divisions of Polymers and CompositesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China University of Chinese Academy of Sciences Beijing100049China

Poly(butylene adipate-co-terephthalate)(PBAT),a widely studied biodegradable material,has not effectively addressed the problem of plastic *** into consideration the cost-effectiveness,upcycling PBAT should take precedence over direct composting *** present work adopts a chain breaking-crosslinking strategy,upcycling PBAT into dual covalent adaptable networks(CANs).During the chainbreaking stage,the ammonolysis between PBAT and polyethyleneimine(PEI)established the primary crosslinked ***,styrene maleic anhydride copolymer(SMA)reacted with the hydroxyl group,culminating in the formation of dual covalent adaptable *** contrast to PBAT,the PBAT-dual-CANs exhibited a notable Young's modulus of 239 MPa,alongside an inherent resistance to creep and *** to catalysis from neighboring carboxyl group and excess hydroxyl groups,the PBAT-dual-CANs exhibited fast stress ***,they could be recycled through extrusion and hot-press reprocessing,while retaining their *** straightforward strategy offers a solution for dealing with plastic waste.

关键词： Poly(butylene adipate-co-terephthalate) Dynamic crosslinked networks Chain breaking-crosslinking strategy Upcycle Recycle

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Structure and Properties of PLA Composite Enhanced with biomass Fillers from Herbaceous Plants

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Journal of Renewable materials 2023年第2期11卷 491-503页

作者： Haining Na Juncheng Huang Hongguang Xu Fei Liu Liangke Xie Baoqing Zhu Jiuchen Wang Jin Zhu Key Laboratory of Bio-Based Polymeric Materials of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China Weifang Yunding New Material Technology Company Limited Weifang262100China Jilin Hwood Technology Company Limited Dunhua133712China

PLA composites containing biomass fillers from the three herbaceous plants such as reed,wheat stalk,and coco-nut fiber with length and diameter at the scale of several millimeters were prepared without using *** reinforcement effect on the properties of PLA/biomass filler composites is *** research results show that the PLA/biomass filler composites exhibit good stiffness,flexural strength,and impact *** the three kinds of biomass fillers,reed reinforced PLA composites show optimal mechanical *** filled with 40%–50%reed,the flexural moduli of the composites are over 7000 *** strength retains at the same level of pure *** notch impact strength reaches to 4.50±0.73 kJ/m^(2),which is 2.06 times higher than that of pure ***,the introduction of biomass fillers increases the crystallization ability of PLA and does not increase the water absorption of the *** research demonstrated that PLA composites prepared with biomass fillers from the herbaceous plants(namely herb plastic composites,HPCs)is a material with good comprehensive mechanical properties while retaining the intrinsic particularity of biological sources.

关键词： PLA biomass filler herb plastic composites

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Developments of polyurethane in biomedical applications:A review

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Resources Chemicals and materials 2023年第4期2卷 262-276页

作者： Minghui Cui Zheng Chai Yao Lu Jin Zhu Jing Chen Department of Materials Science and Engineering Shenyang University of Chemical TechnologyShenyang 110142PR China Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Division of Polymer and Composite MaterialsNingbo Institute of Material Technology and EngineeringChinese Academy of SciencesZhejiangNingbo 315201PR China

Polyurethane is an excellent and widely used polymer *** synthesizing polyurethane,the structure of soft and hard segments in polyurethane could be adjusted,which can obtain better properties than other polymer materials,such as good mechanical properties and *** recent years,due to their excellent chemical stability,biocompatibility,and low cytotoxicity,polyurethanes have been widely used for biomedical *** solve the problems of degradation and recycling,the development of bio-based polyurethane has also become a current hot *** paper summarizes the research progress and applications of polyurethane materials for dressings,skin sensors,orthopedics,and *** also looks forward to the future development of polyurethane medical materials.

关键词： Polyurethane Dressings Skin sensors Orthopedics Cardiovascular applications

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Bacterial nanocellulose assembly into super-strong and humidity-responsive macrofibers

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Journal of bioresources and bioproducts 2024年第3期9卷 369-378页

作者： Yadong Zhao Zheng Yang Rusen Zhou Bin Zheng Meiling Chen Fei Liu Wenhua Miao Renwu Zhou Patrick Cullen Zhenhai Xia Liming Dai Kostya(Ken)Ostrikov School of Food and Pharmacy Zhejiang Ocean UniversityZhoushan 316022China State Key Laboratory of Electrical Insulation and Power Equipment Center for Plasma BiomedicineXi'an Jiaotong UniversityXi'an 710049China School of Chemical and Biomolecular Engineering University of SydneySydney 2006Australia School of Chemistry and Physics and Centre for Materials Science Queensland University of TechnologyBrisbane 4000Australia Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Australian Carbon Materials Centre(A-CMC) School of Chemical EngineeringUniversity of New South WalesSydneyNew South Wales 2052Australia

Cellulose macrofibers (MFs) are gaining increasing interest as natural and biodegradable alternatives to fossil-derived polymers for both structural and functional applications. However, simultaneously achieving their exceptional mechanical performance and desired functionality is challenging and requires complex processing. Here, we reported a one-step approach using a tension-assisted twisting (TAT) technique for MF fabrication from bacterial cellulose (BC). The TAT stretches and aligns BC nanofibers pre-arranged in hydrogel tubes to form MFs with compactly assembled structures and enhanced hydrogen bonding among neighboring nanofibers. The as-prepared BC MFs exhibited a very high tensile strength of 1 057 MPa and exceptional lifting capacity (over 340 000 when normalized by their own weight). Moreover, due to the volume expansion of BC nanofibers upon water exposure, BC MFs quickly harvested energy from environmental moisture to untwist the bundled networks, thus generating a torsional spinning with a peak rotation speed of 884 r/(min·m). The demonstrated rapid and intense actuation response makes the MFs ideal candidates for diverse humidity-response-based applications beyond advanced actuators, remote rain indicators, intelligent switches, and smart curtains.

关键词： Nanocellulose assembly Cellulose macrofibers Super-strong Humidity-responsive actuation Moisture Fast actuation

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Cocatalysts in photocatalytic methane conversion: recent achievements and prospects

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Science China Chemistry 2023年第9期66卷 2532-2557页

作者： Chengcheng Zhang Jing Wang Shenshen Ouyang Hui Song Jinhua Ye Li Shi School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Key Laboratory of Bio-based Polymeric Materials Technology and Application Ningbo Key Laboratory of Polymer MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)Tsukuba 305-0044Japan TJU-NIMS International Collaboration Laboratory School of Material Science and EngineeringTianjin UniversityTianjin 300072China

Photocatalysis, which performed under mild conditions by utilizing solar energy, has become a desirable technology to convert methane into highly valuable chemicals, such as methanol, ethane, and other hydrocarbons. However, pristine photocatalysts still suffer from the low utilization efficiency of solar light and the high recombination rate of photogenerated charge carriers, which exhibit the low activity and selectivity for photocatalytic methane conversion. Loading cocatalysts on photocatalysts is an attractive strategy to manipulate the products' yield and selectivity of photocatalytic methane conversion due to the enhanced charge carrier separation efficiency, extended light absorption and promoted reactant adsorption/desorption kinetics. This review discusses the recent achievements of the cocatalysts for photocatalytic methane conversion reactions. Moreover, the challenges and perspectives for the development of efficient cocatalysts are presented. This review provides considerable guidelines for the design and construction of efficient cocatalysts for photocatalytic methane conversion reactions.

关键词： photocatalysis methane conversion cocatalysts valuable chemicals

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Temperature Effect on the Conformation Transition of Ultra-high Molecular Weight Polyethylene/Polypropylene Blends Undergoing Continuous Volume Extensional Flow:A Mesoscopic Simulation

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Journal of Wuhan University of technology(materials Science) 2022年第3期37卷 540-545页

作者： WANG Junxia YAN Shilin YU Dingshan Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education and Key Laboratory of High Performance Polymer-based Composites of Guangdong Province School of ChemistrySun Yat-Sen UniversityGuangzhou510275China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of TechnologyWuhan 430070China

Due to the multiformity and complexity of chain conformation under external flow and the challenge of systematically investigating the transient conformation and dynamic evolution process of polymer chains at the molecular level by means of present experimental techniques,a universal description of both chain conformation and dynamics with respect to continuous volume extensional flow(CVEF)is still *** into account the temperature effect,we performed dissipative particle dynamics(DPD)simulations with the particles corresponding to the repeat units of polymers over a wide temperature range and analyzed the correlation with the conformational properties of ultra-high molecular weight polyethylene/polypropylene(UHMWPE/PP)blend in response to the *** time evolution,the polymer chains become highly oriented parallel to the flow direction instead of the initial random coiling and *** is found that a high temperature is necessary for more substantial compactness to take place than low *** low-k plateau and low-k peak in structure factor S(k)curves suggest a low degree of conformational diversity and a high degree of chain *** is also concluded that the intra-molecular C-C bond interaction is the main driving force for the dynamics process of the chain conformations undergoing CVEF,where the motion of the alkyl chains is seriously restricted owing to the increase in bond interaction potential,resulting in a reduction of the difference in diffusion rates among alkyl chains.

关键词： temperature effect dissipative particle dynamics ultra-high molecular weight polyethylene polypropylene volume extensional flow chain conformation blends

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Fabrication of Thermoplastic Poly(ether-ester) Elastomers with High Melting Temperature and Elasticity from bio-based 2,5-Furandicarboxylic Acid

ACS Sustainable Resource Management

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ACS Sustainable Resource Management 2024年第7期1卷 1520-1533页

作者： Tao Yang Fei Liu Ruixue Gao Xiaoqin Zhang Jiaxi Li Jinggang Wang Jin Zhu Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Zhenhai Ningbo Zhejiang 315201 China School of Materials Science and Engineering Shenyang University of Chemical Technology Shenyang Liaoning 110142 China

Even though current research on bio-based poly(ester-ether) elastomers (TPEEs) has expanded to include applications, only odd TPEEs with outstanding melting temperatures have been reported thus far. This is due to certain features, like desirable elastic properties and high melting temperature, which are still challenging to obtain without the utilization of petroleum-based monomers. In order to prepare bio-based TPEE with both high thermal resistance and elastic recovery, furan-based poly(1,4-cyclohexanedimethylene furandicarboxylate)-poly(tetramethylene glycol) multiblock copolymers (PCFTMG2k) were synthesized in this work. These copolymers had weight fractions of soft segments PTMG (ωPTMG) ranging from 30 to 80% while maintainingMnof the soft segments at 2 kg/mol. Indeed, while PTMG segments are found to delay substantially the crystallization of the PCF within the copolymers, the results show that TPEEs with both elastic properties and high melting temperatures can be successfully prepared by introducing soft segments with relatively good crystallization ability and controlling the content of soft segments. Moreover, the crystallization behavior of the copolymers was investigated, from which it was found that the copolymers transformed from a non-cocrystallization state to an isodimorphic state as the content of soft segments increased. More importantly, PCFTMG2k-80, containing 80 wt % of the PTMG segment, showed a shape recovery rate as high as 84.9% during the first cyclic test at 200% strain andTmup to 198°C at a high PTMG concentration, which is higher than those of almost all the TPA-based TPEEs. This PCFTMG2kbio-based TPEE will occupy an important position in the future market of high melting temperature thermoplastic elastomers.

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Intrinsically flame-retardant and biodegradable DDP-based adhesives for wet environments

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Chemical Engineering Journal 2025年 515卷

作者： Jiang, Qi Hu, Han Sun, Jinhao Cao, Weihong Luan, Qingyang Zhu, Hanxu Chen, Weiqi Liang, Peng Wang, Jinggang Zhu, Jin Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China University of Chinese Academy of Sciences Beijing100049 China

Adhesives have been increasingly utilized in multifaceted applications, such as furniture, electrical appliances, and buildings. Currently, in addition to fundamental requirements for high adhesiveness, there are increasing demands for environmental sustainability, flame retardancy, and high-performance in extreme conditions. (6H-dibenz[c,e][1,2]oxaphosphorin-6-ylmethyl)-p-oxide-butanedioic acid (DDP) is selected to be incorporated into the Poly(butylene adipate-co-terephthalate) (PBAT) backbone, enabling the synthesis of a novel adhesive (poly(butylene adipate-co-terephthalate-co-phosphaphenanthrene) (PBATDn). Due to the π-π stacking of DDP, PBATD20 exhibits an extremely high adhesion strength of 11 N/cm. Owing to the hydrophobicity of the aromatic ring and the insensitivity of π-π stacking to water, PBATD20 maintains a high adhesion even after being immersed in water for 15 days, thus meeting the requirements for wet-environment applications. In addition to meeting the demand for adhesives, PBATD20 has been shown to reduce the potential fire risk. DDP releases phosphorus-oxygen free radicals to capture the ·H or ·OH radicals generated by polymer burning, effectively inhibiting the burning process. PBATD20 leaves some compact char residues that act as barriers to slow down the transfer of heat, oxygen, and combustible gases, showing excellent flame retardancy. Furthermore, PBATD20 exhibits a superior biodegradation capacity in Candida antarctica lipase B (CALB) at 37 ℃ compared with PBAT, thus reducing environmental pollution. PBATD20 is considered highly suitable for diverse applications in daily production and consumer use, including degradable packaging adhesion, electronics assembly, and the bonding of environmentally friendly building materials. © 2025 Elsevier B.V.

关键词： System-on-package

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Washable and Multifunctional Electronic Textiles Via In Situ Lamination for Personal Health Care

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Advanced Fiber materials 2024年第2期6卷 458-472页

作者： Xinghua Hong Wei Sun Songlin Zhang Zhaogang Tang Mengjuan Zhou Shuai Guo Xingkui Guo Weili Zhao Xiaolin Wang Haiming Chen Ziquan Zhang Dongsheng Mao Chaobin He Swee Ching Tan College of Textiles(International Silk Institute) Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang ProvinceZhejiang Sci-Tech UniversityHangzhou 310018China Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Key Laboratory of Bio‑Based Polymeric Materials Technology and Application of Zhejiang Province Laboratory of Polymers and CompositesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China BCA Academy Singapore 579700Singapore Institute of Materials Research and Engineering Singapore 138634Singapore

Limitations of current electronic textiles(e-textiles),including poor washability,instability,and inferior sensing capability,are concerns hindering their broad and practical applications in personal health care management,virtual games,sports,and ***,we report an RGO/PANI e-textile via alternative coatings of in situ reduced graphene oxides(RGO)and in situ polymerized polyaniline(PANI),establishing a laminated structure on a knitted textile *** a result of an in situ lamination strategy,our e-textile exhibits excellent breathability(1428 mm s^(-1),greater than that of bare cotton fabric)and outstanding sensitivity(gage factor of 39.7)over a wide strain range(~0.0625–200%).Importantly,we observed exceptional sensing durability even after severe mechanical disturbance of stretching,bending,or twisting(>1500 cycles)and daily machine *** analysis revealed that our proposed in situ lamination approach enabled the physical and chemical interactions between sensing active materials and the textile ***,the electromechanical behavior of our RGO/PANI e-textile was thoroughly analyzed based on an equivalent electrical circuit,which agreed well with the experi-mental *** applications of the e-textile were demonstrated for personal health care management,including body motion monitoring,emotional sensing,and flatfoot gait *** RGO/PANI e-textile presented in this study holds significant implications for the evolution of health care applications utilizing smart e-textiles.

关键词： Reduced graphene oxide(RGO) Polyaniline(PANI) In situ lamination Washable e-textile Gait monitoring

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Self-healing polymeric Hydrogels:Toward Multifunctional Soft Smart materials

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Chinese Journal of Polymer Science 2021年第10期39卷 1262-1280,I0006页

作者： Xiao-Ling Zuo Shao-Fan Wang Xiao-Xia Le Wei Lu Tao Chen College of Materials Science and Engineering Guizhou Minzu UniversityGuiyang 550025China Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Material Technology and EngineeringChinese Academy of SciencesNingbo 315201China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

The concept of self-healing that involves a built-in ability to heal in response to damage wherever and whenever it occurs in a material,analogous to the healing process in living organisms,has emerged a couple of decades *** primarily by the demands for life-like materials and soft smart materials,therefore,the development of self-healing polymeric hydrogels has continually attracted the attention of the scientific ***,this review is intended to give an in-depth overview of the state-of-the-art advances in the field of self-healing polymeric ***,recently emerging trends in self-healing polymeric hydrogels are summarized,and notably,recommendations to endow these hydrogels with fascinating multi-functionalities including luminescence,conductivity/magnetism and shape memory etc are *** close,the current challenges and future opportunities in this field are also discussed.

关键词： polymeric hydrogels Self-healing Multi-functionalities Smart materials

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