林产化学与工业2018，Vol.38Issue(3)：41-47,7.DOI:10.3969/j.issn.0253-2417.2018.03.005
高力学强度羟乙基纤维素/聚丙烯酸复合水凝胶的制备
Preparation of Hydroxyethyl Cellulose/Poly( Acrylic Acid) Composite Hydrogels with High Mechanical Strength
摘要
Abstract
A new kind of elastic hydroxyethyl cellulose /poly( acrylic acid) ( HEC/PAA) composite hydrogels was synthesized via free radical polymerization of acrylic acid( AA) with hydroxyethyl cellulose that played the role as a cross-linkers via hydrogen bonding interaction. The prepared composite hydrogels were labeled as HEC/PAA-1-HEC/PAA-5, according to the HEC mass fractions ( hydrogel solid content) were 20.0%, 33.3%, 42.9%, 50.0%, 55.5%. The properties and structure of these hydrogels were then investigated by the mechanical testing and Fourier-transform infrared spectroscopy ( FT-IR ) . The mechanical testing showed that the compressive stress of HEC/PAA-2 composite hydrogels could reach 9. 52 MPa with the strain of about 91%without a break and the compression fracture energy reached 513. 6 kJ/m3 . Meanwhile, HEC/PAA hybrid hydrogels exhibited excellent tensile properties and excellent recoverable performance. The tensile fracture strength of HEC/PAA-4 was 224.3 kPa, which was associated with 198% elongation at break and the tensile fracture energy of 219.5 kJ/m3 . When HEC/PAA-2 swelled for 150 h, the swelling rate of water was 2. 23 g/g. The mechanical test, FT-IR analysis and swelling properties tests results showed that the hydrogen bonds between the PAA chains and HEC chains formed a special network structure and thus resulted in the good mechanical properties of composite hydrogels.关键词
氢键/高力学强度/羟乙基纤维素/聚丙烯酸/复合水凝胶Key words
hydrogen bonding/high mechanical strength/hydroxyethyl cellulose/poly( acrylic acid)/composite hydrogels分类
化学化工引用本文复制引用
郑坤,牛力,刘玉鹏,陈莹,王春鹏,储富祥..高力学强度羟乙基纤维素/聚丙烯酸复合水凝胶的制备[J].林产化学与工业,2018,38(3):41-47,7.基金项目
国家重点研发计划项目(2017YFD0601004) （2017YFD0601004）
中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017MA016) （CAFYBB2017MA016）
江苏省生物质能源与材料重点实验室基本科研业务费(JSBEM-S-201503) （JSBEM-S-201503）
