Synthesis of N-vinylpyrrolidone/Acrylic acid nanoparticles for drug delivery: Method optimizationChaiyakarn Pornpitchanarong, Theerasak Rojanarata, Praneet Opanasopit, Prasopchai Patrojanasophon and Tanasait NgawhirunpatMATEC Web Conf., 192 (2018) 01020DOI: https://doi.org/10.1051/matecconf/201819201020