Advanced Polymer ChromatographyTM Biology NMR PBCA Research biodegradable polymers biodegradation biopolymers chitosan circular economy clad ratio contact angle core material drug delivery film formation functionalized materials glycerol hydrophobic transitions lower critical solution temperature marine water microcapsule microplastics molecular weights poly(lactic acid) poly(vinyl alcohol) self-healing sustainable development thermoresponsive polymers toxicity water dispersions