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Title: Miscible blends of biobased poly(lactide) with poly(methyl methacrylate): Effects of chopped glass fiber incorporation

Abstract

Poly(lactide) (PLA) and poly(methyl methacrylate) (PMMA) are melt compounded with chopped glass fiber using laboratory scale twin-screw extrusion. Physical properties are examined using differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), tensile testing, impact testing, X-ray computed tomography (CT) scanning, and field emission scanning electron microscopy (FE-SEM). Molecular weight is determined using gel permeation chromatography (GPC). Miscibility of the blends is implied by the presence of a single glass transition temperature and homogeneous morphology. PLA/PMMA blends tend to show positive deviations from a simple linear mixing rule in their mechanical properties (e.g., tensile toughness, modulus, and stress at break). The addition of 40 wt % glass fiber to the system dramatically increases physical properties. Across all blend compositions, the tensile modulus increases from roughly 3 GPa to roughly 10 GPa. Estimated heat distortion temperatures (HDTs) are also greatly enhanced; the pure PLA sample HDT increases from 75 degrees C to 135 degrees C. Fiber filled polymer blends represent a sustainable class of earth abundant materials which should prove useful across a range of applications.

Authors:
 [1];  [1];  [2];  [2];  [3];  [3];  [4];  [4];  [1]
  1. Chemical and Biological Engineering Department, Colorado School of Mines, Golden Colorado 80401
  2. Arkema, King of Prussia Pennsylvania
  3. Johns Manville, Littleton Colorado
  4. National Renewable Energy Laboratory, Golden Colorado
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1358344
Report Number(s):
NREL/JA-5000-68547
Journal ID: ISSN 0021-8995
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Polymer Science; Journal Volume: 134; Journal Issue: 22
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; biopolymers and renewable polymers; blends; composites; mechanical properties; thermoplastics

Citation Formats

Cousins, Dylan S., Lowe, Corinne, Swan, Dana, Barsotti, Robert, Zhang, Mingfu, Gleich, Klaus, Berry, Derek, Snowberg, David, and Dorgan, John R.. Miscible blends of biobased poly(lactide) with poly(methyl methacrylate): Effects of chopped glass fiber incorporation. United States: N. p., 2017. Web. doi:10.1002/app.44868.
Cousins, Dylan S., Lowe, Corinne, Swan, Dana, Barsotti, Robert, Zhang, Mingfu, Gleich, Klaus, Berry, Derek, Snowberg, David, & Dorgan, John R.. Miscible blends of biobased poly(lactide) with poly(methyl methacrylate): Effects of chopped glass fiber incorporation. United States. doi:10.1002/app.44868.
Cousins, Dylan S., Lowe, Corinne, Swan, Dana, Barsotti, Robert, Zhang, Mingfu, Gleich, Klaus, Berry, Derek, Snowberg, David, and Dorgan, John R.. Wed . "Miscible blends of biobased poly(lactide) with poly(methyl methacrylate): Effects of chopped glass fiber incorporation". United States. doi:10.1002/app.44868.
@article{osti_1358344,
title = {Miscible blends of biobased poly(lactide) with poly(methyl methacrylate): Effects of chopped glass fiber incorporation},
author = {Cousins, Dylan S. and Lowe, Corinne and Swan, Dana and Barsotti, Robert and Zhang, Mingfu and Gleich, Klaus and Berry, Derek and Snowberg, David and Dorgan, John R.},
abstractNote = {Poly(lactide) (PLA) and poly(methyl methacrylate) (PMMA) are melt compounded with chopped glass fiber using laboratory scale twin-screw extrusion. Physical properties are examined using differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), tensile testing, impact testing, X-ray computed tomography (CT) scanning, and field emission scanning electron microscopy (FE-SEM). Molecular weight is determined using gel permeation chromatography (GPC). Miscibility of the blends is implied by the presence of a single glass transition temperature and homogeneous morphology. PLA/PMMA blends tend to show positive deviations from a simple linear mixing rule in their mechanical properties (e.g., tensile toughness, modulus, and stress at break). The addition of 40 wt % glass fiber to the system dramatically increases physical properties. Across all blend compositions, the tensile modulus increases from roughly 3 GPa to roughly 10 GPa. Estimated heat distortion temperatures (HDTs) are also greatly enhanced; the pure PLA sample HDT increases from 75 degrees C to 135 degrees C. Fiber filled polymer blends represent a sustainable class of earth abundant materials which should prove useful across a range of applications.},
doi = {10.1002/app.44868},
journal = {Journal of Applied Polymer Science},
number = 22,
volume = 134,
place = {United States},
year = {Wed Feb 22 00:00:00 EST 2017},
month = {Wed Feb 22 00:00:00 EST 2017}
}