超坚固且可生物降解的多乳酸-合甘油化物 (PLGA) 透明薄膜,由星形PCL-b-PDLA可塑剂加固
Jieun Jeong1, Sangsoo Yoon1, Xin Yang2
1School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
Polymers
|June 28, 2023
概括
可生物降解的增塑剂增强了聚乳酸-合糖化物 (PLGA) 混合物,产生了超坚固,透明的薄膜. 一个小的补充显著增加了破裂时的延伸,而不会损害强度.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
背景情况:
- 聚乳酸-协同甘油化物 (PLGA) 是一种广泛使用的可生物降解聚合物.
- 提高PLGA的性和机械性能对于先进的应用至关重要.
- 开发可生物降解聚合物的可持续和有效的增塑剂仍然是一个活跃的研究领域.
研究的目的:
- 为了合成可生物降解的星形PCL-b-PDLA塑化剂,使用西利.
- 研究这些增塑剂对PLGA混合物特性的影响.
- 开发完全可降解和超坚固的基于PLGA的材料.
主要方法:
- 合成以星形的多--卡普罗拉克-块-多-D-乳酸 (PCL-b-PDLA) 使用西利作为启动剂.
- 合成的增塑剂与聚乳酸-合糖化物 (PLGA) 混合,形成透明的薄膜.
- 由此产生的混合物的机械,形态和热力学性质的全面表征.
主要成果:
- 添加星形PCL-b-PDLA塑化剂显著提高了PLGA的性.
- 增加0.5%重量的增塑剂 (Mn = 5000 g/mol) 会使破裂时的延长增加到大约248%.
- 在PLLA和PDLA分段之间的立体复合形成了一个强大的网络,增强了界面粘附,并保持了出色的机械强度和模量.
结论:
- 可生物降解的星形PCL-b-PDLA塑化剂有效地提高了PLGA的机械性能.
- 这些可塑化剂可以用透明薄膜创建完全可降解和超强硬的PLGA混合物.
- 开发的材料对要求生物降解性和卓越的机械性能的应用非常有希望.
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