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lixin0817

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[求助] 壳聚糖和酪蛋白酸钠作为壁材,采用离子凝胶法包埋香芹酚

壳聚糖购自sigam试剂公司,CAS号: 9012-76-4,货号448869;
2019年购买了第一批,low molecular weight,粘度122,脱乙酰度76;
2023年购买了第二批,low molecular weight,粘度101,脱乙酰度76;
第一批壳聚糖经单因素优化后,最佳制备条件下,纳米粒子粒径200nm左右,PDI<0.3,电位40mv;第二批壳聚糖在相同的条件下制备纳米粒子粒径900nm左右,PDI<0.3,电位25mv;不同的壳聚糖粒径急速增加,求助一下虫友们除了换原材料重新做优化外,有没有什么改善方法?

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