Improved mechanical properties of zwitterionic hydrogels with hydroxyl groups

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題名:	Improved mechanical properties of zwitterionic hydrogels with hydroxyl groups
作者:	曹恆光;He, Yi;Tsao, Heng-Kwong;Jiang, Shaoyi
貢獻者:	工學院化學工程與材料工程學系
關鍵詞:	Deviation;Hydrogels;hydrogen bonding;Hydrogen bonds;Hydroxyl groups;Mechanical properties;Modulus of elasticity;Moisture content;molecular dynamics;polymers;Simulation;water content;zwitterions
日期:	2012-05-17
上傳時間:	2026-04-21 13:56:03 (UTC+8)
出版者:	American Chemical Society;United States: American Chemical Society
摘要:	摘要： Molecular dynamics simulations were performed to examine the mechanical properties of poly(carboxybetaine methacrylate) (pCBMA) hydrogels. pCBMA hydrogels with additional hydroxyl groups as physical cross-linkers (OH-pCBMA hydrogels) were studied for comparison. Results show that OH-pCBMA hydrogels have higher elastic modulus than pCBMA hydrogels. This improvement can be explained by hydrogen bond formation between hydroxyl groups and carboxylate groups in the OH-pCBMA hydrogel, which result in an enhanced polymer network within the hydrogel. The enhancement of the polymer work is also suggested by a smaller value of root-mean-square deviation of zwitterionic side chain pairs in the OH-pCBMA hydrogel than that in the pCBMA hydrogel. Additionally, the presence of hydrogen bonds leads to a lower equilibrium water content for the OH-pCBMA hydrogel compared to the pCBMA hydrogel, which is another reason for the greater mechanical modulus of the OH-pCBMA hydrogel. 其他題名： J. Phys. Chem. B 出版者： United States: American Chemical Society 出版日期： 2012-05-17 出處： The journal of physical chemistry. B, 2012-05, Vol.116 (19), p.5766-5770 資源來源： American Chemical Society Journals 版權： Copyright © 2012 American Chemical Society 識別號： ISSN: 1520-6106 識別號： ISSN: 1520-5207 識別號： EISSN: 1520-5207 識別號： DOI: 10.1021/jp300205m 識別號： PMID: 22509980
顯示於類別:	[化學工程與材料工程學系 ] 期刊論文

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