Photo-Crosslinked Poly(ε-caprolactone fumarate) Networks: Roles of Crystallinity and Crosslinking Density in Determining Mechanical Properties.

Photo-Crosslinked Poly(ε-caprolactone fumarate) Networks: Roles of Crystallinity and Crosslinking Density in Determining Mechanical Properties.
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DOI:
10.1016/j.polymer.2008.10.021
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发表时间:
2008-12-08
期刊:
影响因子:
4.6
通讯作者:
Lu, Lichun
Lu, Lichun
中科院分区:
化学2区
文献类型:
--
作者:
Wang, Shanfeng;Yaszemski, Michael J.;Gruetzmacher, James A.;Lu, Lichun

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我们提出了一种结晶度和交联度相结合的材料设计策略,以控制聚合物生物材料的力学性能。以名义相对分子质量分别为530、1250和2000g.mol-1的聚己内酯二元醇为原料合成了三种聚己内酯富马酸酯(PCLF530、PCLF1250和PCLF2000),并通过光交联方法制备了聚合物网络。在制备过程中使用了5种不同量的光交联剂,以了解光引发剂对PCLF网络的交联性和物理性质的调节作用。测试了光交联型PCLF的玻璃化转变温度(Tg)、熔融温度(Tm)和降解温度(Td)等热性能,并与其流变性能和力学性能进行了关联。
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 (Tg), melting temperature (Tm), and degradation temperature (Td) of photo-crosslinked PCLFs were examined and correlated with their rheological and mechanical properties.
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