Preparation of Biodegradable Poly(butylene succinate terephthalate) Copolyester Foamed Particles Based on Supercritical Carbon Dioxide Autoclave Foaming Technology

被引：0

作者：

Ji F. ^{[1
]}

Zhang Y. ^{[1
]}

Gong W. ^{[1
]}

Yu Q. ^{[2
]}

Zhu J. ^{[1
]}

Guo J. ^{[1
]}

Luo S. ^{[1
]}

机构：

[1] College of Chemical Engineering and Materials, Fujian Engineering and Research Center of Green and Environment-Friendly Functional Footwear Materials, Quanzhou Normal University, Quanzhou

[2] School of Materials Science and Engineering, Tianjin University, Tianjin

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2022年 / 38卷 / 04期

关键词：

Autoclave foaming; Biodegradable copolyester; Foamed particles; Poly (butylene succinate terephthalate) copolyester; Supercritical carbon dioxide;

D O I：

10.16865/j.cnki.1000-7555.2022.0083

中图分类号：

学科分类号：

摘要：

Biodegradable poly(butylene succinate terephthalate) copolyester (PBST) foamed particles were prepared by supercritical carbon dioxide autoclave foaming technology for the first time. 1H-NMR analysis shows that the molar fraction of succinic acid in PBST is 55%. Differential scanning calorimetry results show that the glass transition temperature and melting point of PBST are -16 ℃ and 118 ℃, respectively. Thermogravimetric results show that the decomposition temperature of PBST is 312 ℃. The effects of permeation temperature, permeation time and permeation pressure on the density and expansion ratio of PBST foamed particles were studied. The results shows that when the permeation temperature increases from 60 ℃ to 80 ℃, the density of PBST foamed particles decreases and the expansion ratio increases. When PBST foamed particles are kept for 1 d, the density of PBST foamed particles increases and the expansion ratio of PBST foamed particles decreases. When the storage time is increased to 7 d, the density and expansion ratio remain unchanged; when the permeation time increases from 1 h to 2 h, the density of PBST foamed particles decreases and the expansion ratio increases; when the permeation time is increased from 2 h to 3 h, the density and expansion ratio of PBST foamed particles remain unchanged; when the permeation pressure is increased from 10 MPa to 12 MPa, the density of PBST foamed particles decreases and the expansion ratio increases; when the permeation pressure is increased from 12 MPa to 14 MPa, the density and expansion ratio of PBST foamed particles remain unchanged. The optimum permeation temperature, permeation time and permeation pressure of PBST foamed particles are 70 ℃, 2 h, and 12 MPa, respectively. SEM result shows that the average pore size of PBST foamed particles is ca. 10 μm. This work can provide experimental basis and theoretical guidance for the application of PBST in the field of green environmental protection and lightweight. © 2022, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：66 / 72

页数：6

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