Preparation of Maleic Anhydride Grafted Poly(trimethylene terephthalate) (PTT-g-MA) by Reactive Extrusion Processing

Author(s)

Braga, Natalia E. ; Zaggo, Henrique M. ; Montanheiro, Thais L. A. ; Passador, Fabio R.

• Document type: Journal article
• Source: JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING; v. 3, n. 2, p. 11-pg., 2019-06-01.

Abstract

Maleic anhydride (MA) grafted with poly(trimethylene terephthalate) (PTT)-abbreviated as PTT-g-MA-can be used as a compatibilizing agent to improve the compatibility and dispersion of nanofillers and a dispersed polymer phase into PTT matrix. This work suggests the preparation of PTT-g-MA using a mixture of PTT, MA, and benzoyl peroxide (BPO) by a reactive extrusion process. PTT-g-MA was characterized to confirm the grafting reaction of maleic anhydride on PTT chains by Fourier transform infrared (FTIR) spectroscopy. Thermal properties (differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)) and rheological analysis (parallel plates rheology) were used to prove the changes that occurred after the graphitization reaction. The reactive processing route allowed the production of the compatibilizing agent (PTT-g-MA) with good thermal properties and with lower viscosity compared to neat PTT, and this could be an alternative for the compatibilization of polymer blends, as example for PTT/ABS (acrylonitrile butadiene styrene) blends and nanocomposites based on PTT matrix. (AU)

• FAPESP's process: 17/24873-4 - PHBV and hydroxybutyrate functionalized CNT nanocomposite: kinetic study of crystallization and correlation with mechanical properties
• Grantee: Thaís Larissa do Amaral Montanheiro
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 16/19978-9 - Development of PA6/LLDPE blend-based carbon black nanocomposites for antistatic packaging for electronic components
• Grantee: Fabio Roberto Passador
• Support Opportunities: Regular Research Grants