CHARACTERIZATION AND TERPOLYMERIZATION OF CARBON DIOXIDE/PROPYLENE OXIDE/γ-BUTYROLACTONE

LU Lingbin; HUANG Kelong; HUANG Lu; YAN Wenbin

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CHARACTERIZATION AND TERPOLYMERIZATION OF CARBON DIOXIDE/PROPYLENE OXIDE/γ-BUTYROLACTONE

Research Article | 更新时间：2021-03-19

- CHARACTERIZATION AND TERPOLYMERIZATION OF CARBON DIOXIDE/PROPYLENE OXIDE/γ-BUTYROLACTONE
- Acta Polymerica Sinica Issue 3, Pages: 384-388(2005)
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- Published：20 June 2005，
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LU Lingbin, HUANG Kelong, HUANG Lu, YAN Wenbin. CHARACTERIZATION AND TERPOLYMERIZATION OF CARBON DIOXIDE/PROPYLENE OXIDE/γ-BUTYROLACTONE. [J]. Acta Polymerica Sinica (3):384-388(2005)
DOI：

LU Lingbin, HUANG Kelong, HUANG Lu, YAN Wenbin. CHARACTERIZATION AND TERPOLYMERIZATION OF CARBON DIOXIDE/PROPYLENE OXIDE/γ-BUTYROLACTONE. [J]. Acta Polymerica Sinica (3):384-388(2005) DOI：

摘要

通过二氧化碳(CO2 )、环氧丙烷(PO)与γ- 丁内酯(GBL)的三元开环共聚反应

得到一种三元共聚物

脂肪族聚碳酸酯(PPCG) .对PPCG的结构进行了FTIR、1H-NMR及13C-NMR表征

表明GBL被开环嵌入PO-CO2分子链中

使得共聚物中引入了易水解的羧酸酯单元.对PPCG的热性能、降解性能进行了测试.结果表明

在一定范围内

随着γ丁内酯单元的增加

特性粘数降低

PPCG的玻璃化转变温度升高

材料降解性增强;不同的聚合反应时间对PPCG的特性粘数和和玻璃化转变温度也有着明显的影响.

Abstract

Carbon dioxide is the primary contamination in the atnlosphere．In order to reduce the pollution caused by CO2

some methods have been developed to use CO2 as the raw material to produce degradable polymeric materials A new aliphatic polycarbonate (PPCG) was successfully synthesized with terpolymerization of carbon dioxide

propylene oxide(PO)and γ-butyrolaetone (GBL)．The copolymer was characterized bymeans of FTIR

1H-NMR and 13C-NMR．The results showed that the ring of GBL was opened and inserted into the chain of PO-CO2． GBL offered an ester structural unit making the copolymer easier to be hydmlyzed．The intrinsic viscosity

viscosity-average molecular weight (Mv)

and glass-transition temperature(Tg) of eopolymers were determined．PPCG exhibited a Tg of around 40％

whichis higher than that of PPC The influence of reaction time and ratio of PO：GBL (mol／mol) on Mv and Tg of copolymer were tested The increase of reaction time may result in higher Mv and Tg.The total weight loss was used to characterize the degradation ability in hydmlysis tests．It was concluded that eopolymers of high GBL content exhibited good degradabilidy．

关键词

二氧化碳环氧丙烷γ-丁内酯脂肪族聚碳酸酯三元共聚表征

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