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Biodegradation of DTP and pet fiber by Microbe

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Journal of Donghua University(English Edition) 2003年第4期20卷 107-110页

作者：张健飞王晓春巩继贤顾振亚 College of Mattrial Science and Chemical Engineering Tianjin Polytechnic University Tianjin 300160 College of Mattrial Science and Chemical Engineering Tianjin Polytechnic University Tianjin 300160he degradation of diethylene glycol terephthalate (DTP) and polyethylene terephthalate (PET) fiber by microbe was studied. The degree of DTP degradation was determined by High Performance Liquid Chromatography (HPLC) to be more than 90%. The products after degradation of DTP and PET fiber were various. The degradation of DTP can be described by the first-order reaction model. The degradation of PET fiber was found to be little but surface erosion of PET fiber could be clearly seen from the SEM photographs indicating there occurred some traces of biodegradation on the PET fiber surface.

The degradation of diethylene glycol terephthalate (DTP) and polyethylene terephthalate (pet) fiber by microbe was *** degree of DTP degradation was determined by High Performance Liquid Chromatography (HPLC) to be more than 90%.The products after degradation of DTP and pet fiber were *** degradation of DTP can be described by the first-order reaction *** degradation of pet fiber was found to be little,but surface erosion of pet fiber could be clearly seen from the SEM photographs indicating there occurred some traces of biodegradation on the pet fiber surface.

关键词： Microbe Degradation DTP pet fiber Environment Degradation kinetics

Electrical and Optical Characterization of DBD and Its Application to Plasma Treatment of pet fibers

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Plasma Science and Technology 2011年第6期13卷 641-644页

作者：刁颖徐金洲胡倩倩张菁石建军郭颖 Department of Applied Physics College of ScienceDonghua University

A newly developed atmospheric pressure dielectric barrier discharge （DBD） plasma treatment system （PLA-PLA） was used in this study. The discharge is characterized by electrical analysis and optical emission spectroscopy （OES）. The characters of the discharge were found to change systematically with an increase of applied voltage and variation of flow ratio of O2/Ar in the plasma. The OES analysis revealed that the relatively weak spectrum line can be detected beyond a certain applied power value. It is also found that the emission intensity of main species in the discharge spectrum will be enhanced with the increase of applied power. To improve the wettability, poly （ethylene terephtalate）（pet） fiber was treated in this system. The surface morphology and properties of fiber after plasma treatment were investigated by both scanning electron microscope （SEM） and contact angle measurement.

关键词： plasma treatment dielectric barrier discharges (DBD) pet fiber wettability

Surface Modification and Characterization of pet fibers

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Paper And Biomaterials 2016年第2期1卷 32-37页

作者： SuFeng Zhang MeiJuan Zhang ZhaoXia Sun Jing Wan CongCong Chi College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and TechnologyShaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper

Improvement in synthetic fiber based composites is a hot topic in the material *** incompatibility between the surfaces of synthetic fibers is a significant challenge due to fibers hydrophobic *** this study,pet(polyethylene terephthalate) fibers based on low hydrophilic were slightly treated with NaOH or sodium dodecyl benzene sulfonate(SDBS).SEM images showed that there were some pits on the surface of pet fibers treated by NaOH,while pet fibers treated by SDBS became *** peaks at 3725 cm^(-1) and 3628 cm^(-1) were generated for pet fibers treated by NaOH,which was attributed to—OH produced from the ester group hydrolysis,but no same peak is shown for the treated ones by ***,the crystallinity indices of the treated pet fibers slightly *** with original pet fibers,the formation of sheet made from pet fibers treated by NaOH became worse,but that from SDBS treated pet fibers became better.

关键词： pet fiber surface modification NaOH SDBS paper formation

A FOURIER TRANSFORM INFRARED SPECTROSCOPIC STUDY OF THE REACTION BETWEEN POLY (VINYL PYRIDINE)S AND EPOXY COMPOUNDS

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Chinese Journal of Polymer Science 1987年第2期5卷 133-140页

作者：薛奇江善根 Department of Chemistry Nanjing University Nanjing Department of Chemistry Nanjing University Nanjing

Chemical reactions between poly （vinyl pyridine）s and 1, 4-butanediol diglycidyl ether and other epoxy compounds were studied by Fourier transform infrared spectroscopy and other techniques. The epoxy group was found to react with the pyridine side group of poly （4-vinyl pyridine）, forming crosslinked networks which contain cyclic amide structures. The reaction was also observed in the interracial region of poly（vinyl pyridine） and γ-glycidoxy propyl trimethoxysilane hydrolyzate （γ-GPS） coatings on pet fiber substrates. Poly（2-vinyi pyridine） does not show the same reaction.

关键词： poly(4-vinyl pyridine) poly(2-vinyl pyridine) epoxy, compound cyclic amide FTIR pet fiber interfacial reaction

大应变FRP约束钢筋混凝土桥墩的水平往复加载试验研究

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大应变FRP约束钢筋混凝土桥墩的水平往复加载试验研究