Mechanical and thermal properties of impact modified PBT blends and impact modified PBT nanocomposites
-
Ranjana Sharma
,
Susmita Dey Sadhu
Abstract
Elastomer toughened poly(butylene terephthalate) (PBT)/organoclay [Cloisite 30B, organo-montmorillonite (OMMT)] nanocomposites were prepared via melt blending using a micro-compounder. In this work, two types of impact modifiers, ultra low density polyethylene grafted glycidyl methacrylate (ULDPE-g-GMA, IM1) and ethylene-methyl acrylate-glycidyl methacrylate (E-MA-GMA, IM2) were used, and a detailed comparison of the effect of both was made. With respect to the impact strength, 2 wt% of ULDPE-g-GMA produced a better result as compared to 2 wt% E-MA-GMA. Therefore, 2 wt% of ULDPE-g-GMA is considered as the optimized percentage for the preparation of nanocomposites. Being an impact modifier, ULDPE-g-GMA decreases the yield stress, tensile modulus and breaking strength of pure PBT. This issue was addressed in this paper by using organoclay, which may improve the tensile properties of PBT materials. The content of ULDPE-g-GMA was kept constant, whereas organoclay (OMMT) content was varied from 2 to 5 wt% in nanocomposites. The melting and crystallization behavior of pure PBT, impact modified PBT and its nanocomposites were studied by differential scanning calorimetry (DSC). Crystalline morphology was investigated using polarizing optical microscopy (POM) at 185°C, 195°C, and 205°C crystallization temperatures. The optimum increase in tensile modulus of the elastomer toughened PBT nanocomposites was seen with a 3 wt% addition of organoclay.
The authors are grateful to LARPM, CIPET, Bhubaneswar, for their generous support for the compounding facility. The authors would like to thank DSM Engineering Plastics, Pluss Polymers and Arkema India for the kind donation of the PBT and the impact modifiers (ULDPE-g-GMA and E-MA-GMA). The authors would also like to thank the Netaji Subhas Institute of Technology, University of Delhi, New Delhi for financial support.
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©2013 by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- Masthead
- Original articles
- Heat distortion temperature of PPS/PC blend, PPS/PC nanocomposite and PPS/PC/GF hybrid nanocomposite
- Mechanical and thermal properties of impact modified PBT blends and impact modified PBT nanocomposites
- Twin screw extrusion with Expancel foaming agent
- Facile synthesis of new thermally stable and organo-soluble polyamide-imides from phosphorus-containing aromatic amines and various dianhydrides
- Graft copolymerization of poly(vinyl acetate) onto starch using KMnO4-H2SO4 redox system
- Synthesis and properties of polysiloxane graft waterborne polyurethane modified with α-N,N-dihydroxyethylaminopropyl-ω-butylpolydimethylsiloxane
- Thermal, mechanical and tribological properties of polycarbonate/acrylonitrile-butadiene-styrene blends
- Thermal conductivity and electrical conductivity of silicone rubber filled with aluminum nitride and aluminum powder
- Individual and combined effects of modified starch, bentonite and their composite powder with HPMC on the performance of cement mortars
- Optical characteristics of injection-molded fluorene polymers
- Novel epoxy resin composites containing polyaniline coated short kenaf bast fibers and polyaniline nanowires: mechanical and electrical properties
Articles in the same Issue
- Masthead
- Masthead
- Original articles
- Heat distortion temperature of PPS/PC blend, PPS/PC nanocomposite and PPS/PC/GF hybrid nanocomposite
- Mechanical and thermal properties of impact modified PBT blends and impact modified PBT nanocomposites
- Twin screw extrusion with Expancel foaming agent
- Facile synthesis of new thermally stable and organo-soluble polyamide-imides from phosphorus-containing aromatic amines and various dianhydrides
- Graft copolymerization of poly(vinyl acetate) onto starch using KMnO4-H2SO4 redox system
- Synthesis and properties of polysiloxane graft waterborne polyurethane modified with α-N,N-dihydroxyethylaminopropyl-ω-butylpolydimethylsiloxane
- Thermal, mechanical and tribological properties of polycarbonate/acrylonitrile-butadiene-styrene blends
- Thermal conductivity and electrical conductivity of silicone rubber filled with aluminum nitride and aluminum powder
- Individual and combined effects of modified starch, bentonite and their composite powder with HPMC on the performance of cement mortars
- Optical characteristics of injection-molded fluorene polymers
- Novel epoxy resin composites containing polyaniline coated short kenaf bast fibers and polyaniline nanowires: mechanical and electrical properties
