Quantifying the sensitivity of the network structure and properties from simultaneous measurements during photopolymerization.
Quantifying the sensitivity of the network structure and properties from simultaneous measurements during photopolymerization.
复制标题
DOI:
10.1039/c7sm00419b
复制
发表时间:
2017-05-31
期刊:
影响因子:
3.4
通讯作者:
Chiang MYM
中科院分区:
文献类型:
--
作者:
Sarkar S;Baker PJ;Chan EP;Lin-Gibson S;Chiang MYM
We present a method that combines experimental and computational approaches to assess a comprehensive set of structural and functional evolution during a network formation process via photopolymerization. Our work uses simultaneous measurement of degree of conversion, polymerization stress, change in reaction temperature, and shrinkage strain in situ. These measurements are combined with the theory of viscoelastic materials to deduce the relaxation time and frequency-dependent modulus of the polymerizing network. The relaxation time and degree of conversion are used demonstrate the effect of processing parameters (e.g. curing protocol adjusted by the light intensity) in creating different network structures for the same initial resin. We describe experimental trends using effective medium calculations on a cross-linked polymer network model. In particular, we show that the effect of curing conditions on the spatial heterogeneity in crosslinks density can be quantified using multiparametric measurements and modeling. Collectively, the present method is a way to examine holistically the complex structural and functional evolution of network formation process.
登录
查看更多内容
影响因子:
14
作者:
Sideridou, I;Tserki, V;Papanastasiou, G
通讯作者:
Papanastasiou, G
影响因子:
5
作者:
Stansbury, JW;Trujillo-Lemon, M;Ge, JH
通讯作者:
Ge, JH
影响因子:
44.1
作者:
KIRKPATRICK, S
通讯作者:
KIRKPATRICK, S
影响因子:
14
作者:
Carvalho, RM;Chersoni, S;Tay, FR
通讯作者:
Tay, FR
影响因子:
8.6
作者:
Schirmacher, W;Diezemann, G;Ganter, C
通讯作者:
Ganter, C