光交联聚富马酸ε-己内酯网络：结晶度和交联密度在决定机械性能中的作用
Photo-Crosslinked Poly(ε-caprolactone fumarate) Networks: Roles of Crystallinity and Crosslinking Density in Determining Mechanical Properties.
作者信息
Wang Shanfeng, Yaszemski Michael J, Gruetzmacher James A, Lu Lichun
机构信息
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996, USA.
出版信息
Polymer (Guildf). 2008 Dec 8;49(26):5692-5699. doi: 10.1016/j.polymer.2008.10.021.
Abstract
We present a material design strategy of combining crystallinity and crosslinking to control the mechanical properties of polymeric biomaterials. Three polycaprolactone fumarates (PCLF530, PCLF1250, and PCLF2000) synthesized from the precursor polycaprolactone (PCL) diols with nominal molecular weights of 530, 1250, and 2000 g.mol(-1), respectively, were employed to fabricate polymer networks via photo-crosslinking process. Five different amounts of photo-crosslinking initiator were applied during fabrication in order to understand the role of photoinitiator in modulating the crosslinking characteristics and physical properties of PCLF networks. Thermal properties such as glass transition temperature (T(g)), melting temperature (T(m)), and degradation temperature (T(d)) of photo-crosslinked PCLFs were examined and correlated with their rheological and mechanical properties.
摘要
我们提出了一种结合结晶度和交联来控制聚合物生物材料力学性能的材料设计策略。由标称分子量分别为530、1250和2000 g·mol⁻¹的前体聚己内酯（PCL）二醇合成的三种富马酸聚己内酯（PCLF530、PCLF1250和PCLF2000），通过光交联过程用于制备聚合物网络。在制备过程中应用了五种不同量的光交联引发剂，以了解光引发剂在调节PCLF网络的交联特性和物理性能中的作用。对光交联PCLFs的玻璃化转变温度（T(g)）、熔点（T(m)）和降解温度（T(d)）等热性能进行了研究，并将其与流变学和力学性能相关联。
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