Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber

博士 === 國立臺北科技大學 === 有機高分子研究所 === 105 === There are two series of copolyesters were synthesized individually in this study. One series of aliphatic/aromatic copolyester was that contained different amounts of aliphatic segments, constructed from adipic acid (AA, 0~0.117 mole ratios), and fixed amoun...

Full description

Bibliographic Details
Main Authors: Wei-Peng Lin, 林維朋
Other Authors: Syang-Peng Rwei
Format: Others
Online Access:http://ndltd.ncl.edu.tw/handle/qbd3kj
id ndltd-TW-105TIT05310003
record_format oai_dc
spelling ndltd-TW-105TIT053100032019-05-15T23:53:21Z http://ndltd.ncl.edu.tw/handle/qbd3kj Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber 聚(己二酸/聚乙二醇/對苯二甲酸乙二酯)合成及其纖維物性研究 Wei-Peng Lin 林維朋 博士 國立臺北科技大學 有機高分子研究所 105 There are two series of copolyesters were synthesized individually in this study. One series of aliphatic/aromatic copolyester was that contained different amounts of aliphatic segments, constructed from adipic acid (AA, 0~0.117 mole ratios), and fixed amount of poly(ethylene oxide) (PEO) segments. The other series was aliphatic/aromatic copolyester that contained different amounts of PEO segments, constructed from polyethylene glycol (PEG, 0.003~0.019 mole ratios, 4~20wt%). The structures of each series of copolymers were confirmed by 1H nuclear magnetic resonance (1H-NMR). The molecular weights were determined directly by gel permeation chromatography (GPC) and indirectly by the intrinsic viscosity (IV). The results of thermal tests revealed that both melting temperature (Tm) and crystallization temperature (Tc) decreased as the aliphatic segment and PEO segment contents increased. The glass transition temperatures (Tg) that were determined by DMA followed the same trend as did Tm. Moreover, the thermal stability, determined from TGA declined as AA and PEG were incorporated into the PET main-chains. All of the copolymers that were synthesized herein were spun into fibers and then physically characterized. The tenacity of the fibers decreased as the aliphatic segment and PEO segment contents increased. The crystalline structures, revealed by wide-angle X-ray scattering (WAXS), indicated that the crystallinity decreased with increasing AA and PEG contents because of the reduction of regularity of the PET chains. Most importantly, the tests that were carried out on the knitted fabric demonstrated that the Moisture absorptivity and cool feeling (Qmax) of the copolymer fabrics were better than those of fabrics that comprised neat PET chains owing to the incorporation of PEO segments. Finally, the copolymer fabric exhibited better hydrolysis and enzymatic degradation than did neat PET fabric. Syang-Peng Rwei 芮祥鵬 學位論文 ; thesis 78
collection NDLTD
format Others
sources NDLTD
description 博士 === 國立臺北科技大學 === 有機高分子研究所 === 105 === There are two series of copolyesters were synthesized individually in this study. One series of aliphatic/aromatic copolyester was that contained different amounts of aliphatic segments, constructed from adipic acid (AA, 0~0.117 mole ratios), and fixed amount of poly(ethylene oxide) (PEO) segments. The other series was aliphatic/aromatic copolyester that contained different amounts of PEO segments, constructed from polyethylene glycol (PEG, 0.003~0.019 mole ratios, 4~20wt%). The structures of each series of copolymers were confirmed by 1H nuclear magnetic resonance (1H-NMR). The molecular weights were determined directly by gel permeation chromatography (GPC) and indirectly by the intrinsic viscosity (IV). The results of thermal tests revealed that both melting temperature (Tm) and crystallization temperature (Tc) decreased as the aliphatic segment and PEO segment contents increased. The glass transition temperatures (Tg) that were determined by DMA followed the same trend as did Tm. Moreover, the thermal stability, determined from TGA declined as AA and PEG were incorporated into the PET main-chains. All of the copolymers that were synthesized herein were spun into fibers and then physically characterized. The tenacity of the fibers decreased as the aliphatic segment and PEO segment contents increased. The crystalline structures, revealed by wide-angle X-ray scattering (WAXS), indicated that the crystallinity decreased with increasing AA and PEG contents because of the reduction of regularity of the PET chains. Most importantly, the tests that were carried out on the knitted fabric demonstrated that the Moisture absorptivity and cool feeling (Qmax) of the copolymer fabrics were better than those of fabrics that comprised neat PET chains owing to the incorporation of PEO segments. Finally, the copolymer fabric exhibited better hydrolysis and enzymatic degradation than did neat PET fabric.
author2 Syang-Peng Rwei
author_facet Syang-Peng Rwei
Wei-Peng Lin
林維朋
author Wei-Peng Lin
林維朋
spellingShingle Wei-Peng Lin
林維朋
Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber
author_sort Wei-Peng Lin
title Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber
title_short Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber
title_full Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber
title_fullStr Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber
title_full_unstemmed Synthesis and Characterization of AA/PEG/ET Co-polyester Fiber
title_sort synthesis and characterization of aa/peg/et co-polyester fiber
url http://ndltd.ncl.edu.tw/handle/qbd3kj
work_keys_str_mv AT weipenglin synthesisandcharacterizationofaapegetcopolyesterfiber
AT línwéipéng synthesisandcharacterizationofaapegetcopolyesterfiber
AT weipenglin jùjǐèrsuānjùyǐèrchúnduìběnèrjiǎsuānyǐèrzhǐhéchéngjíqíxiānwéiwùxìngyánjiū
AT línwéipéng jùjǐèrsuānjùyǐèrchúnduìběnèrjiǎsuānyǐèrzhǐhéchéngjíqíxiānwéiwùxìngyánjiū
_version_ 1719155566985609216