Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization
碩士 === 國立臺北科技大學 === 化學工程與生物科技系化學工程碩士班 === 107 === Polyethylene terephthalate (PET) is a very widely used thermoplastic resin. Because it is not biodegradable, PET recycling and reusing, so called r-PET, has become an important issue in environmental protection. The recycling process leads to the p...
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ndltd-TW-107TIT0031A0592019-11-06T03:33:16Z http://ndltd.ncl.edu.tw/handle/e78mg9 Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization 回用瓶級聚酯經固聚後熔體押出之研究 WU, YOU-XIN 吳侑信 碩士 國立臺北科技大學 化學工程與生物科技系化學工程碩士班 107 Polyethylene terephthalate (PET) is a very widely used thermoplastic resin. Because it is not biodegradable, PET recycling and reusing, so called r-PET, has become an important issue in environmental protection. The recycling process leads to the polymer chain scissions of r-PET, which limits its applications. The purpose of this study is to explore the feasibility to increase the molecular weight of r-PET by solid state polymerization with adding additives. At the same time the processability of r-PET was investigated by numerical simulation. It is hoped that the improved solid state polymerization process will become a powerful means to enhance the value of recycled materials. The r-PET used in this study is mixed with the surface-modified nanoporous carbon in the the process of granulation and then polymerized in solid state. Rheological and thermal analysis of the resulting r-PETs are carried out by capillary rheometer, TGA, DSC, etc., to establish a spectrum of database and to evaluate the effect of solid state polymerization on the r-PET. The results show that the efficiency of solid state polymerization is significantly promoted by adding additives, but the additives may affect the Thermal stability and absorption of moisture from the r-PET. In the latter part of the study, the rheological and thermal database was imported into the simulation software VEL to analyze the internal melt flow phenomenon of the r-PET in extrusion and spinning die. The possible processing problems were reported and suitable processing measures were proposed to provide a vital reference of its applications of r-PET. SU, YUAN-YUAN 蘇淵源 2019 學位論文 ; thesis 95 zh-TW |
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碩士 === 國立臺北科技大學 === 化學工程與生物科技系化學工程碩士班 === 107 === Polyethylene terephthalate (PET) is a very widely used thermoplastic resin. Because it is not biodegradable, PET recycling and reusing, so called r-PET, has become an important issue in environmental protection. The recycling process leads to the polymer chain scissions of r-PET, which limits its applications. The purpose of this study is to explore the feasibility to increase the molecular weight of r-PET by solid state polymerization with adding additives. At the same time the processability of r-PET was investigated by numerical simulation. It is hoped that the improved solid state polymerization process will become a powerful means to enhance the value of recycled materials.
The r-PET used in this study is mixed with the surface-modified nanoporous carbon in the the process of granulation and then polymerized in solid state. Rheological and thermal analysis of the resulting r-PETs are carried out by capillary rheometer, TGA, DSC, etc., to establish a spectrum of database and to evaluate the effect of solid state polymerization on the r-PET. The results show that the efficiency of solid state polymerization is significantly promoted by adding additives, but the additives may affect the Thermal stability and absorption of moisture from the r-PET. In the latter part of the study, the rheological and thermal database was imported into the simulation software VEL to analyze the internal melt flow phenomenon of the r-PET in extrusion and spinning die. The possible processing problems were reported and suitable processing measures were proposed to provide a vital reference of its applications of r-PET.
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author2 |
SU, YUAN-YUAN |
author_facet |
SU, YUAN-YUAN WU, YOU-XIN 吳侑信 |
author |
WU, YOU-XIN 吳侑信 |
spellingShingle |
WU, YOU-XIN 吳侑信 Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization |
author_sort |
WU, YOU-XIN |
title |
Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization |
title_short |
Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization |
title_full |
Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization |
title_fullStr |
Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization |
title_full_unstemmed |
Studying the Melt Extrusion of Recycled Polyethylene Terephthalate Bottle After Solid State Polymerization |
title_sort |
studying the melt extrusion of recycled polyethylene terephthalate bottle after solid state polymerization |
publishDate |
2019 |
url |
http://ndltd.ncl.edu.tw/handle/e78mg9 |
work_keys_str_mv |
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