2016 Fiscal Year Final Research Report
Molecular Weight Control of Cyclic Polyester via Transesterification and its Usability as Nucleating Agents for Linear Analog
| Project/Area Number |
15K13788
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Okayama University |
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Principal Investigator |
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| Research Collaborator |
YOSHIDA SAORI 岡山大学, 大学院環境生命科学研究科, 大学院生
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 高分子構造・物性 / 高分子結晶化 / ポリ乳酸 / エステル交換 / 結晶化核剤 / ずり流動 / 環状高分子 |
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| Outline of Final Research Achievements |
The purpose of this work is to control the molecular weight of cyclic polyesters via shear induced transesterification. It is expected that ring expansion or ring division will be occurred by transesterification of cyclic polyesters. We investigated the applicability of cyclic polyester with controlled molecular weight obtained in this process as a crystallization nucleating agent for homogeneous linear polyester. Detailed examinations are as follows: (1) Synthesis and characterization of cyclic poly(L-lactide) and determination of initial molecular weight, (2) Measurement of molecular weight and distribution of the sample after shear induced transesterification reaction, (3) Availability test of cyclic polyester controlled in molecular weight as a nucleating agent for linear analogues.
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| Free Research Field |
高分子物理化学
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