Process optimization of sweet potato pulp-based biodegradable plastics using response surface methodology

Jun T. Kim, Dong S. Cha, Gee D. Lee, Tae W. Park, Dong K. Kwon, Hyun Jin Park

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Biodegradable plastics were produced from sweet potato pulp (SPP) and cationic starch (CS) or chitosan composite (CC) by compression molding and their mechanical properties were tested. A universal testing machine, Rockwell hardness tester, and Izod impact tester were used for testing the mechanical properties (flexural strength, Rockwell hardness, and Izod strength) of the plastics. A central composite second-order design was used to study the effects of temperature, time, and moisture content on the flexural strength, Rockwell hardness, and Izod strength of SPP/CS and SPP/CC blended plastics. The flexural strength, Rockwell hardness, and Izod strength of SPP-based plastics was 101.1-305.9 kg/cm2, R29.0-R96.7, and 0.6-3.0 kg cm cm-2, respectively. Regression analysis predicted the optimal mechanical properties (flexural strength, Rockwell hardness, and Izod strength) to be attained with a 150-160°C temperature, 15-20-min reaction time, and 20-23% moisture content.

Original languageEnglish
Pages (from-to)423-434
Number of pages12
JournalJournal of Applied Polymer Science
Volume83
Issue number2
DOIs
Publication statusPublished - 2002 Jan 10

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Keywords

  • Flexural
  • Izod
  • Response surface methodology
  • Rockwell hardness
  • Sweet potato pulp

ASJC Scopus subject areas

  • Polymers and Plastics

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