Utilization of Spent Coffee Grounds as a Sustainable Resource for the Synthesis of Bioplastic Composites with Polylactic Acid, Starch, and Sucrose oleh Sri Yustikasari Masssijaya, Muhammad Adly Rahandi Lubis, Rossy Choerun Nissa, Yeyen Nurhamiyah, Pramono Nugroho, Petar Antov, Seng-Hua Lee, Antonios N. Papadopoulos, Sukma Surya Kusumah, Lina Karlinasari