摘要
将聚乙烯醇和海藻酸钠的混合水溶液通过凝固浴凝固,再通过反复冷冻-解冻的方法制备出交联的水凝胶。该水凝胶在NaCl水溶液中加直流电场后表现出溶胀、收缩、弯曲行为。该凝胶的弯曲速度和最大弯曲度随电压及NaCl溶液浓度的增加而增大,最大形变量随凝胶中的海藻酸钠含量的增加而增大。
Poly(vinyl alcohol)/sodium alginate composite hydrogel was prepared by solidification the blending solution of poly(vinyl alcohol) and sodium alginate, then freezing and thawing repeatedly. In the direct current electric field, the composite hydrogel in NaCl aqueous solution was swelling, contracting and bending. It′s bending speed and maximum bending degree increased with the increasing of electric field intensity and the concentration of NaCl solution. The maximum bending degree increased with the increasing of sodium alginate content in the composition hydrogel.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2003年第6期160-163,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金(10172039)
全军医药卫生"十五"科研基金(01MA088)
军事医学科学院创新基金资助项目
