Pengaruh proses loading obat terhadap mekanisme disolusi obat amoksisilin trihidrat pada matriks hidrogel kitosan-poli (N-vinilpirrolidon) dengan agen pembentuk pori CaCO3 secara semi-IPN = Effect of drug loading method against the dissolution mechanism of encapsulated amoxicillin trihidrate drug in matrix of semi-ipn chitosan-poly (N-vinyl pyrrolidone) hydrogel with pore forming agent CaCO3