中文摘要：

合成了一种新型可降解阳离子聚（氨乙酰氧乙基天冬酰胺）盐酸盐（PAAEA·HCI），并由PAAEA·HCI与羧甲基纤维素钠（NaCMC）水溶液通过静电相互作用得到纳米级聚电解质复合物．同时，研究了该聚电解质溶液浓度、性质、离子强度对复合物粒径和ξ-电位的影响．结果表明，在蒸馏水中，聚电解质浓度为1．0mmol／L、电荷比n＋／n-为2制备得到的聚电解质复合物纳米粒子平均粒径为110nm，ξ-电位为35mV，其溶液在4℃时可以稳定保存一周．

英文摘要：

A novel polycation, poly（a was prepared starting from L-aspartic acid. minoacetyloxyethylaspartamide） hydrochloride （PAAEA · HCI） The polyelectrolyte complex nanoparticles were ξ-ormed via the electrostatic interaction between poly （aminoacetyloxy-ethylaspartamide） hydrochloride and sodium carboxymethylcellulose. The effects of polyion concentration, solution properties, solution ionic strength on the sizes and zeta potentials of the formed nanoparticles were investigated. The size and ξ-potential of nan oparticles, prepared from a solution of poly（aminoacetyloxyethylaspartamide） hydrochloride in water （1.0 mmol/L） and a solution of sodium carboxymethylcellulose in water （1.0 mmol/L） at n＋/n- =2, are 110 nm and 35 mV, respectively. Thus obtained nanoparticles are stable within one week at 4 ℃.