Effects of fiber characteristics on the mechanical and rheological properties of poly(butylene terephthalate)/ glass fiber composites

Seon Ho Jang, Youn Hee Kim, Soonho Lim, Gi Dae Choi, Se Hyun Kim, Woo Nyon Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Morphological, mechanical, and rheological properties of poly(butylene terephthalate) (PBT)/glass fiber (GF) composites and their fiber lengths after extrusion were studied, along with the molecular weight of PBT and the sizing effect of the fiber. From the molecular weight effect of PBT on mechanical properties, the lower molecular weight PBT composites prepared showed higher flexural and tensile strengths compared to the PBT/GF composites prepared with a higher molecular weight PBT when the fiber content was over 20 wt %. This behavior was mainly due to the increased fiber length of the PBT/GF composite prepared with lower molecular weight PBT. For the PBT composites with GF coated with organic materials having polarity similar to that of the PBT matrix, better mechanical properties were observed due to higher bonding forces between the matrix and fibers. Due to the effect of fiber length on the complex viscosity of the PBT/GF composite and its resulting high elasticity, the shear thinning behavior was more significant for the composites containing long fibers than in composites containing short fibers. From the above results, it is suggested that the optimum mechanical properties of the fiber-reinforced polymer composite can be achieved by varying the processing conditions such as molecular weight of the matrix polymer, surface treatment of the fiber, and feeder location of the fiber. 2010 Wiley Periodicals, Inc.

Original languageEnglish
Pages (from-to)3005-3012
Number of pages8
JournalJournal of Applied Polymer Science
Volume116
Issue number5
DOIs
Publication statusPublished - 2010 Jun 5

Fingerprint

Glass fibers
Fibers
Composite materials
Molecular weight
Mechanical properties
butylene
fiberglass
terephthalic acid
Shear thinning
Polymer matrix
Bending strength
Extrusion
Surface treatment
Elasticity
Polymers
Tensile strength
Viscosity

Keywords

  • Glass fiber
  • Mechanical property
  • Morphology
  • Poly(butylene terephthalate)
  • Polymer composite
  • Rheology

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films
  • Chemistry(all)

Cite this

Effects of fiber characteristics on the mechanical and rheological properties of poly(butylene terephthalate)/ glass fiber composites. / Jang, Seon Ho; Kim, Youn Hee; Lim, Soonho; Choi, Gi Dae; Kim, Se Hyun; Kim, Woo Nyon.

In: Journal of Applied Polymer Science, Vol. 116, No. 5, 05.06.2010, p. 3005-3012.

Research output: Contribution to journalArticle

Jang, Seon Ho ; Kim, Youn Hee ; Lim, Soonho ; Choi, Gi Dae ; Kim, Se Hyun ; Kim, Woo Nyon. / Effects of fiber characteristics on the mechanical and rheological properties of poly(butylene terephthalate)/ glass fiber composites. In: Journal of Applied Polymer Science. 2010 ; Vol. 116, No. 5. pp. 3005-3012.
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