The effect of the glass transition temperature on the toughness of photopolymerizable (meth)acrylate networks under physiological conditions.
The effect of the glass transition temperature on the toughness of photopolymerizable (meth)acrylate networks under physiological conditions.
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DOI：
10.1016/j.polymer.2009.08.040
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发表时间：
2009-10-09
期刊：
影响因子：
4.6
通讯作者：
Gall, Ken
中科院分区：
文献类型：
--
作者：
Smith, Kathryn E.;Parks, Suzanne S.;Hyjek, Michelle A.;Downey, Sara E.;Gall, Ken
本研究的目的是评估光聚合（甲基）丙烯酸酯网络的韧性如何受到生理条件的影响。利用两种三元（甲基）丙烯酸酯网络，MA-co-MMA-co-PEGDMA和2 HEMA-co-BMA-co-PEGDMA，通过改变线性单体（MA与MMA或2 HEMA与BMA）的重量比，研究了玻璃化转变温度（Tg）、水含量和状态与韧性之间的关系。进行差示扫描量热法和热重分析以评估热行为和水含量作为MA或2 HEMA浓度的函数，同时在37°C下进行拉伸应变失效测试以确定网络韧性。两种网络在PBS中的组合物中表现出最大韧性，对应于接近测试温度的Tg。通过化学变化调节玻璃化转变温度和/或亲水性来实现该韧性最大值。这些关系可用于设计用于机械严格的生物医学应用中的坚韧的可光聚合网络。
The purpose of this study is to evaluate how the toughness of photopolymerizable (meth)acrylate networks is influenced by physiological conditions. By utilizing two ternary (meth)acrylate networks, MA-co-MMA-co-PEGDMA and 2HEMA-co-BMA-co-PEGDMA, relationships between glass transition temperature (Tg), water content and state, and toughness were studied by varying the weight ratio of the linear monomers (MA to MMA or 2HEMA to BMA). Differential scanning calorimetry and thermogravimetric analysis were performed to evaluate the thermal behavior and water content as a function of either MA or 2HEMA concentration while tensile strain-to-failure tests were performed at 37°C to determine network toughness. Both networks exhibited a maximum in toughness in PBS in the composition corresponding to a Tg close to the testing temperature. This toughness maximum was achieved by adjusting the glass transition temperature and/or hydrophilicity through changes in chemistry. These relationships may be utilized to design tough photopolymerizable networks for use in mechanically rigorous biomedical applications.
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DOI：
10.1002/jctb.5010020901
发表时间：
1952-01-01
期刊：
JOURNAL OF APPLIED CHEMISTRY
影响因子：
--
作者：
GORDON, M;TAYLOR, JS
通讯作者：
TAYLOR, JS
影响因子：
4.9
作者：
Gall, K;Yakacki, CM;Anseth, KS
通讯作者：
Anseth, KS
影响因子：
5.5
作者：
Kong, HJ;Wong, E;Mooney, DJ
通讯作者：
Mooney, DJ
影响因子：
4.6
作者：
BARNES, A;CORKHILL, PH;TIGHE, BJ
通讯作者：
TIGHE, BJ
影响因子：
3
作者：
REFOJO, MF;YASUDA, H
通讯作者：
YASUDA, H