CAJ | 학술논문

研究了在线型聚(丙烯酸)(PAA)溶液中链长、pH、离子强度和水/二甲亚砜混合溶剂组成对非离子聚(N-乙烯基-2-吡咯烷酮)(PVP)水凝胶溶胀特性的影响. 发现聚酸浓度的变化引起凝胶显著的体积相变，这是因为凝胶和聚合物通过氢键形成了大分子间凝胶-聚合物复合物. 凝胶的溶胀特性取决于聚酸的链长而不是离子强度. 随着pH值和水/二甲亚砜混合溶剂组成的变化，凝胶的溶胀率(SR)发生变化.
연구료재선형취(병희산)(PAA)용액중련장、pH、리자강도화수/이갑아풍혼합용제조성대비리자취(N-을희기-2-필각완동)(PVP)수응효용창특성적영향. 발현취산농도적변화인기응효현저적체적상변，저시인위응효화취합물통과경건형성료대분자간응효-취합물복합물. 응효적용창특성취결우취산적련장이불시리자강도. 수착pH치화수/이갑아풍혼합용제조성적변화，응효적용창솔(SR)발생변화.
The swelling behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) hydrogel in a linear poly(acrylic acid) solution upon the influence of chain lengh,pH,ionic strength,and water/dimethyl sulfoxide composition was studied.The sharp shrinkage of the gel volume within a narrow range of polyacid concetration takes place as a result of the formation of an intermacromolecular gel-polymer complex on the base of hydrogen bonding.The swelling behaviour strongly depends on the chain length of the polyacid rather than on the ionic strengh.With the increase of pH value and changing water/dimethyl sulfoxide composition the gel reswelling is induced.