Can anyone say why hydroxypropylbeta cyclodextrin swells more in basic pH than i n acidic?

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Nibedita Banik

Bably Khatun You may refer to the below mentioned papers

1. https://www.dovepress.com/development-of-beta-cyclodextrin-based-hydrogel-microparticles-for-sol-peer-reviewed-fulltext-article-DDDT#

2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456989/

The explanation is given beautifully there. Hope this will help you.