WANG Lilin, SHEN Xiangyi, SU Haijia, et al. Preparation and characterization of subacid environment responsive polyaspartic acid modified liposomes[J]. CIESC Journal, 2015, (3): 1234-1239.
WANG Lilin, SHEN Xiangyi, SU Haijia, et al. Preparation and characterization of subacid environment responsive polyaspartic acid modified liposomes[J]. CIESC Journal, 2015, (3): 1234-1239.DOI: 10.11949/j.issn.0438-1157.20141374.
PASP modified liposomes (PLPs) were prepared by using negatively charged PASP chains linked to the head of positively charged phospholipid via electrostatic adsorption. A "one-step" method was developed to form and modify the liposomes. Single factor experiments were conducted to prepare high pH sensitive PLPs. The optimal formula in preparing PLPs was 2.5%(mass) PASP solution with pH8.5. TEM results showed that PASP modified liposomes had a larger particle size and their surface with higher electro-negativity. PASP modified liposomes are a kind of relatively stable emulsion system.