Tailoring physical machinery and biodegradation properties of unsaturated polyesters through manipulation of synthesis and curing conditions
Tailoring physical machinery and biodegradation properties of unsaturated polyesters through manipulation of synthesis and curing conditions
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通过控制合成和固化条件来定制不饱和聚酯的物理机械和生物降解性能
DOI：
10.1016/j.polymdegradstab.2020.109336
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发表时间：
2020-11
影响因子：
5.9
通讯作者：
Wang Chuanxing
中科院分区：
文献类型：
--
作者：
Gao Chuanhui;Wang Sikai;Zhang Jing;Liu Yuetao;Wang Chuanxing
不饱和聚酯，特别是具有低挥发性或不含苯乙烯的不饱和聚酯，在凝胶涂料、粘合剂和模塑树脂中的重要性日益增加。然而，固化的不饱和聚酯通常被描述为不可降解聚酯，这将导致环境和安全问题。本文合成了一种具有不同二元酸组成的不饱和聚丁二酸丁二醇酯-共-环氧丁二醇酯（PBISx）。然后，在不添加苯乙烯类固化剂的情况下，通过硫醇-烯点击反应得到了在一定条件下可降解的光固化聚酯（CPBIS）。通过改变原料配比可以有效地控制不饱和聚酯PBISx的物理性能，如Tg从-23.7 ℃到-45.2 ℃，XC从38%到14%，Tm从109.6 ℃到74.9 ℃。结果表明，当CPBIS的凝胶率超过98%时，CPBIS在脂肪酶中完全失去降解性。在GSH/脂肪酶混合体系中，CPBIS在70 h后恢复降解，降解率达到12%，这是由于GSH对C-S-C键的选择性降解和脂肪酶对酯键的二次降解所致。
Unsaturated polyesters, in particular unsaturated polyesters with low volatility or without styrene, are gaining increasing importance in gel coatings, adhesives and molding resins. However, the cured unsaturated polyesters are usually described as non-degradable polyesters, which will lead to environmental and safety problems. In this paper, a kind of unsaturated copolyester with different binary acid composition, named poly (butylene succinate-co-butylene itaconic) (PBISx), was synthesized. Then, a photo-curable polyester(CPBIS) which can degrade under certain conditions was obtained by thiol - ene click reaction without adding styrene curing agent. The physical properties of unsaturated polyester PBISx can be effectively controlled by changing the ratio of raw materials, such asTgfrom - 23.7oC to - 45.2oC,Xcfrom 38% to 14%, andTmfrom 109.6 °C to 74.9 °C. It was found that CPBIS completely lost its degradability in lipase when its gel rate exceeded 98%. However, CPBIS could be degraded in GSH regardless of the gel rate, and lipase resumed its degradation in the GSH/lipase mixture, and the degradation rate reached 12% at 70h, attributed to the selective degradation of C-S-C bond by GSH and the secondary degradation of ester bond by lipase.
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影响因子：
3
作者：
Santana CC;Barbosa LA;Júnior IDB;Nascimento TGD;Dornelas CB;Grillo LAM
通讯作者：
Grillo LAM
影响因子：
2.4
作者：
Chan Woo Lee;Mayumi Akashi;Y. Kimura;Kazunari Masutani
通讯作者：
Chan Woo Lee;Mayumi Akashi;Y. Kimura;Kazunari Masutani
影响因子：
6.2
作者：
van der Meulen, Inge;Li, Yingyuan;Heise, Andreas
通讯作者：
Heise, Andreas
DOI：
10.4028/www.scientific.net/amr.750-752.1318
发表时间：
2013-08
期刊：
Advanced Materials Research
影响因子：
--
作者：
B. Sun;C. Chuai;S. Luo;Yingyu Guo;X. Feng
通讯作者：
B. Sun;C. Chuai;S. Luo;Yingyu Guo;X. Feng
影响因子：
3
作者：
M. Gonzalez;R. Ruseckaite;T. Cuadrado
通讯作者：
M. Gonzalez;R. Ruseckaite;T. Cuadrado