Preparation and Rheological Characterization of Long Chain Branching Polyglycolide

被引：0
|
作者：
Liu, Wei-Lin [1 ,2 ]
Lyu, Ming-Fu [2 ]
Zhang, Heng-Yuan [2 ]
Liu, Jian-Ye [2 ]
Zhang, Shi-Jun [2 ]
机构：
[1] Beijing Univ Chem Technol, Beijing 100029, Peoples R China
[2] SINOPEC Beijing Res Inst Chem Ind Co Ltd, Beijing 100013, Peoples R China
来源：
CHINESE JOURNAL OF POLYMER SCIENCE | 2024年 / 42卷 / 08期
关键词：
Polyglycolide (PGA); Long chain branching (LCB); Rheology; LACTIC-ACID; CRYSTALLIZATION KINETICS; POLY(LACTIC ACID); POLYETHYLENE; TEMPERATURE; POLYPROPYLENE; BEHAVIOR;
D O I：
10.1007/s10118-024-3118-4
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The long chain branching (LCB) polyglycolide (PGA) was successfully prepared by the successive reactions of the terminal hydroxyl groups of PGA with triglycidyl isocyanurate (TGIC) and pyromellitic dianhydride (PMDA). The influence of LCB produced by functional group reaction on rheological and crystallization behavior was studied and discussed through linear rheology, uniaxial elongation and DSC (differential scanning calorimetry). The much higher viscosity and the more notable strain hardening behavior of modified PGA indicates the LCB with high degree of entanglements are created. The melt strength of PGA is finally improved greatly and can make sure that the supercritical CO2 foaming can be carried out successfully.
引用
收藏
页码：1177 / 1184
页数：8
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