四川轻化工大学学报（自然科学版）2023，Vol.36Issue(6)：8-16,9.DOI:10.11863/j.suse.2023.06.02
全物理交联水凝胶的制备与性能研究
Preparation and Properties Investigation of Fully Physically Crosslinked Hydrogels
摘要
Abstract
The microcrystal-hydrophobic association-hydrogen bond triple physically cross-linked hydrogel has been prepared via free radical polymerization and freezing using polyvinyl alcohol(PVA)and gum arabic(GA)as polymer matrix in the present study.Potassium persulfate and sodium hydrogen sulfite are used as the initiators,acrylamide(AM)and acrylic acid(AA)are used as hydrophilic monomers,octadecyl methacrylate(SMA)is used as hydrophobic monomers,dodecane sodium benzenesulfonate(SDBS)is used as surfactant.Then,Fe3+ is introduced into the hydrogel by immersing in FeCl3 aqueous solution to form ionic cross-linking with—COO-in the hydrogel,and the microcrystal-hydrophobic association-hydrogen bond-ion fully physically cross-linked hydrogel is obtained.By varying the amount of SDBS,PVA,and Fe3+,hydrogels with different contents of SDBS,PVA,and Fe3+ are prepared.The mechanical performances tests show that the optimal strength,modulus,elongation at break,and fracture energy of the hydrogel can reach 5.12 MPa,3.53 MPa,2230% and 26.96 MJ/m3,respectively.By testing the swelling properties of the hydrogel,the results show that the maximum swelling degree of the microcrystal-hydrophobic association-hydrogen bond triple physically cross-linked hydrogel can reach 135.58 times.关键词
水凝胶/全物理交联/多重网络/力学性能/溶胀性能Key words
hydrogel/fully physically crosslinking/multiple network/mechanical performance/swelling performance分类
化学化工引用本文复制引用
李乾隆,邹良松,吴雄飞,张雪梅,高晨..全物理交联水凝胶的制备与性能研究[J].四川轻化工大学学报（自然科学版）,2023,36(6):8-16,9.基金项目
四川省科技厅项目(2022JDTD0016) （2022JDTD0016）
自贡市重点科技计划项目(2020YGJC13) （2020YGJC13）
材料腐蚀与防护四川省重点实验室项目(2021CL09) （2021CL09）
精细化工助剂及表面活性剂四川省高校重点实验室项目(2020JXY04) （2020JXY04）
四川轻化工大学人才引进项目(2020RC16) （2020RC16）
大学生创新训练项目(cx2021007) （cx2021007）
