This thesis contains material from [1] paper published in the following peer-reviewed journal(s) / from papers accepted at conferences in which I am listed as an author.Chapter 3 to 6 are published as Guo Dong Kwang, Kaarunya Sampathkumar, and Say Chye Joachim Loo. Ultralong floating hydrogel raft for prolonged gastric retention. MRS Bulletin (2022).
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