title: Effect of glycidyl methacrylate (GMA) on the thermal, mechanical and morphological property of biodegradable PLA/PBAT blend and its nanocomposites.
abstract: Poly(lactic acid) (PLA)/Polybutylene adipate co-terephthalate (PBAT) blend and its nanocomposites were prepared using melt blending technique. Glycidyl methacrylate (GMA) has been used as a reactive compatibilizer to improve the interface between PLA and PBAT. Mechanical studies indicated an increase in impact strength and tensile modulus of PLA matrix with the increase in PBAT loading. PLA/PBAT blend prepared at ratio of 75:25 exhibited optimum impact strength. Further, incorporation of GMA to the tune of 5wt.% and nanoclay shows an increase of impact strength. Morphological interpretations through SEM reveals improved interfacial adhesion between the PLA/PBAT blend in presence of GMA and nanoclay. XRD studies indicated an increase in d-spacing in PLA/PBAT/C20A blend nanocomposite thus revealing intercalated morphology. DSC and TGA thermograms also showed improved thermal properties as compared with virgin PLA. DMA tests revealed an increase in damping factor, confirming strong influence between PLA/PBAT blend in presence of GMA and nanoclay.
authors.affiliation: Laboratory for Advanced Research in Polymeric Materials (LARPM), CIPET Bhubaneswar 751024, India.
authors.forename: Mukesh
authors.initials: M
authors.lastname: Kumar
authors.forename: S
authors.initials: S
authors.lastname: Mohanty
authors.forename: S K
authors.initials: SK
authors.lastname: Nayak
authors.forename: M
authors.initials: M
authors.lastname: Rahail Parvaiz
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D003460:Crystallization; D004852:Epoxy Compounds / Q000737:chemistry / Q000494:pharmacology*; D019344:Lactic Acid / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods*; D055595:Mechanical Phenomena / Q000187:drug effects*; D008689:Methacrylates / Q000737:chemistry / Q000494:pharmacology*; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D011091:Polyesters / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013718:Tensile Strength / Q000187:drug effects; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D001672:Biocompatible Materials; D004852:Epoxy Compounds; D008689:Methacrylates; D011091:Polyesters; D011108:Polymers; C488797:poly(butylene adipate-co-butylene terephthalate); D019344:Lactic Acid; C033616:poly(lactide); C007870:glycidyl methacrylate