摘要
UV absorbance(A) of self-assembled films of poly(dimethyldiallyl ammonium chloride)(PDDA) and poly(styrene sulfonate)(PSS) with various concentrations of polyelectrolyte(c__P) at different concentrations of sodium chloride was investigated. It was found that the A～c__P curves display a discontinuous phenomenon. And the turning point concentration, at which the A～c__P curve starts to display a discontinuous phenomenon, is in good agreement with the critical concentration c* of PSS or PDDA polyelectrolyte solutions. The results above attribute to the change of chain shape of polyelectrolytes in solutions caused by c__P and c(NaCl). Thus, it is inferred that chain shape of polyelectrolyte in solutions affects the thickness of PSS/PDDA multilayer films.
UV absorbance(A) of self-assembled films of poly(dimethyldiallyl ammonium chloride)(PDDA) and poly(styrene sulfonate)(PSS) with various concentrations of polyelectrolyte(c__P) at different concentrations of sodium chloride was investigated. It was found that the A～c__P curves display a discontinuous phenomenon. And the turning point concentration, at which the A～c__P curve starts to display a discontinuous phenomenon, is in good agreement with the critical concentration c* of PSS or PDDA polyelectrolyte solutions. The results above attribute to the change of chain shape of polyelectrolytes in solutions caused by c__P and c(NaCl). Thus, it is inferred that chain shape of polyelectrolyte in solutions affects the thickness of PSS/PDDA multilayer films.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第4期787-789,共3页
Chemical Journal of Chinese Universities
基金
国家重点基础研究"九七三"计划专项基金(批准号:9732003C8615700)
国家自然科学基金(批准号:20376068)资助.
关键词
自组装膜
聚电解质
高分子浓度
临界浓度
Self-assembled film
Polyelectrolyte
Polymer concentration
Critical concentration.
