Effect of adamantyl methacrylate on the thermal and mechanical properties of thermosensitive poly(N‐isopropylacrylamide) hydrogels |
| |
Authors: | Dongyu Zhu Mangeng Lu Jianwei Guo Liyan Liang Yanxun Lan |
| |
Affiliation: | 1. Guangzhou Institute of Chemistry, Chinese Academy of Science, Guangzhou 510650, China;2. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China |
| |
Abstract: | A series of thermosensitive hydrogels containing adamantyl groups were fabricated by copolymerization of N‐isopropylacrylamide and adamantyl methacrylate (AdMA). The thermal properties of such copolymeric hydrogels were studied by differential scanning calorimetry. The mechanical properties were emphasized through compression, tension, and dynamic mechanical analysis (DMA). Moreover, Rubber elasticity theory was used to evaluate the network parameters based on compressive stress–strain measurements. The results indicate that both the microstructure and physical properties strongly depend on the quantity of AdMA in the copolymeric gels. As the content of AdMA increases, the volume phase transition temperature of hydrogels decreases linearly, and the mechanical strength can be significantly improved, the effective crosslinking density (νe) increases monotonously, while the polymer‐water interaction parameter (χ) decreases first and then increases with AdMA content. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
| |
Keywords: | poly(N‐isopropylacrylamide) adamantyl methacrylate hydrogels mechanical properties structure‐property relations |
|
|