Synthesis of Hetroaromatic Polyamide and Imide–Acid-Functional Fe3O4 Nanoparticle and Their Effect on Thermal Degradation of PLA. Issue 18 (12th December 2017)

• Record Type: Journal Article
• Authors: Ramezani, Mostafa; Shabanian, Meisam; Mosslemin, Mohammad Hossein
• Is Part Of: Polymer-plastics technology and engineering. Volume 56:Issue 18(2017)
• Page Start: 1961
• Page End: 1968
• Publication Date: 2017-12-12
• Subjects: High-performance polymers -- nanocomposites -- polyamides -- thermal properties; Polymers -- Periodicals; Polymerization -- Periodicals; Polymers -- Periodicals; Engineering -- Periodicals; Plastics -- Periodicals; 668.9
• DOI: 10.1080/03602559.2017.1298795
• Languages: English
• ISSNs: 0360-2559

Abstract

ABSTRACT: A new hetroaromatic polyamide-reinforced polylactic acid (PLA)/functional Fe3 O4 nanocomposite system was prepared through solution casting method. The hetroaromatic polyamide (PA) was synthesized from 2, 5-pyridinedicarboxylic acid and 3, 3′-diaminodiphenyl sulfone by direct polycondensation reaction. An imide–acid-functional Fe3 O4 nanoparticle was prepared using pyromellitic dianhydride and coupling agent. As a potential reinforcement, PA and imide–acid-functionalized Fe3 O4 were used in a PLA system. Combination of the functional Fe3 O4 with PA showed a good effect on improving the thermal properties of PLA. The temperature at 5 mass% loss ( T 5 ) was increased from 309°C to 337°C in PLA–PA containing 5 mass% of PA (PLA–PA 5) as compared to the neat PLA. The char yield of PLA–PA–FN 10 was increased from 0.5% to 8.9% as compared to the neat PLA and it was much high as compared to the system containing only 5 mass% of PA or the functional Fe3 O4 . GRAPHICAL ABSTRACT: