PET/EPR blends properties in the presence of compatibilisers containing glycidyl methacrylite

Azhar Ahmad, . and Al-Malaika S., . PET/EPR blends properties in the presence of compatibilisers containing glycidyl methacrylite. pp. 219-232. ISSN 1511-1768

Blends of PET with the different commercial co(ter)polymer compatibilisers were prepared and the effect of their glycidyl methacrylate (GMA) content and viscosity on the blend properties was determined. The efficiency of compatibilisation of the commercial co(ter)polymer in the ternary blends was examined and compared. For all the ternary blends (PET/EPR/co(ter)polymer the PET content was fixed at 70 wt of the total weight of the blends. Higher compatibilisation effect was found in PET/EPR blends compatibilised with the commercial copolymer ethylene glycidyl methacrylate (E-GMA8(5)) containing 8 GMA and MFI 5 (g/10min) was achieved as reflected in the observed higher elongation at break when compared to corresponding blends compatibilised with the methyl acrylate containing terpolymer ethylene methyl acrylate glycidyl methacrylate EM-GMA8(6) containing 8 GMA and MFI 6 (g/10min). The presence of methyl acrylate ester groups in the commercial terpolymer EM-GMA (containing similar amount of GMA and same MFI) resulted in low level of compatibilisation due to the possibility of a higher extent of branching and crosslinking resulting from the presence of the ester groups and this would be responsible for the observed lower elongation and the less favourable morphology observed. Further the more bulky structure of the terpolymer compared to the copolymer would give rise to a more difficult migration to the interface thus lowering the efficiency of compatibilisation. However the morphology of both blends compatibilised with either the terpolymer or the copolymer were not significantly different.

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Abstract

Blends of PET with the different commercial co(ter)polymer compatibilisers were prepared and the effect of their glycidyl methacrylate (GMA) content and viscosity on the blend properties was determined. The efficiency of compatibilisation of the commercial co(ter)polymer in the ternary blends was examined and compared. For all the ternary blends (PET/EPR/co(ter)polymer the PET content was fixed at 70 wt of the total weight of the blends. Higher compatibilisation effect was found in PET/EPR blends compatibilised with the commercial copolymer ethylene glycidyl methacrylate (E-GMA8(5)) containing 8 GMA and MFI 5 (g/10min) was achieved as reflected in the observed higher elongation at break when compared to corresponding blends compatibilised with the methyl acrylate containing terpolymer ethylene methyl acrylate glycidyl methacrylate EM-GMA8(6) containing 8 GMA and MFI 6 (g/10min). The presence of methyl acrylate ester groups in the commercial terpolymer EM-GMA (containing similar amount of GMA and same MFI) resulted in low level of compatibilisation due to the possibility of a higher extent of branching and crosslinking resulting from the presence of the ester groups and this would be responsible for the observed lower elongation and the less favourable morphology observed. Further the more bulky structure of the terpolymer compared to the copolymer would give rise to a more difficult migration to the interface thus lowering the efficiency of compatibilisation. However the morphology of both blends compatibilised with either the terpolymer or the copolymer were not significantly different.

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Item Type:	Article
AGROVOC Term:	Viscosity
AGROVOC Term:	Esters
AGROVOC Term:	Branching
AGROVOC Term:	Cross-linking
AGROVOC Term:	morphology
AGROVOC Term:	Blending
AGROVOC Term:	Polymers
AGROVOC Term:	Alloys
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Temperature
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/22963

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