DOI: 10.1002/app.1995.070551008. Microstructural changes in homopolymers and polymer blends induced by elastic strain pulverization

Microstructural changes in homopolymers and polymer blends induced by elastic strain pulverization

10.1002/app.1995.070551008

Crossref journal-article

Wiley

Journal of Applied Polymer Science (311)

Abstract

AbstractA novel polymer processing technique known as elastic strain pulverization (ESP) involves the simultaneous effects of high pressure and shear deformation to pulverize polymers. Homopolymers and blends of commercially important postconsumer plastics, including high‐density and low‐density polyethylene (HDPE, LDPE), polypropylene (PP), and poly styrene (PS) are studied by several characterization techniques to determine the effects of ESP on the microstructure. Electron spin resonance spectroscopy confirms that free radicals are generated by the mechanical rupture of main chain carbon bonds during pulverization by ESP. The possibility of these free radicals terminating by heterogeneous combination to form compatibilizing block or graft copolymers in coprocessed polymer blends establishes the potential of ESP in commingled plastics recycling. Differential scanning calorimetry (DSC) and polarized light microscopy of homopolymers and blends indicate that crystalline structure is drastically altered by ESP processing. Spherulite size reduction is also observed in both crystalline/crystalline and crystalline/amorphous blends after ESP. These results are consistent with homogenization that may be due to the formation of compatibilizing copolymers by heterogeneous macroradical combination. © 1995 John Wiley & Sons, Inc.

Bibliography

Ahn, D., Khait, K., & Petrich, M. A. (1995). Microstructural changes in homopolymers and polymer blends induced by elastic strain pulverization. Journal of Applied Polymer Science, 55(10), 1431â1440. Portico.

Authors 3

Dongchan Ahn (first)
Klementina Khait (additional)
Mark A. Petrich (additional)

References 40 Referenced 18

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10.1002/app.1994.070510106

Dates

Type	When
Created	22 years, 4 months ago (April 15, 2003, 6:31 p.m.)
Deposited	1 year, 9 months ago (Nov. 20, 2023, 11:10 p.m.)
Indexed	1 year, 9 months ago (Nov. 20, 2023, 11:40 p.m.)
Issued	30 years, 5 months ago (March 7, 1995)
Published	30 years, 5 months ago (March 7, 1995)
Published Online	22 years, 5 months ago (March 10, 2003)
Published Print	30 years, 5 months ago (March 7, 1995)

Funders 0

None

BibTeX

@article{Ahn_1995, title={Microstructural changes in homopolymers and polymer blends induced by elastic strain pulverization}, volume={55}, ISSN={1097-4628}, url={http://dx.doi.org/10.1002/app.1995.070551008}, DOI={10.1002/app.1995.070551008}, number={10}, journal={Journal of Applied Polymer Science}, publisher={Wiley}, author={Ahn, Dongchan and Khait, Klementina and Petrich, Mark A.}, year={1995}, month=mar, pages={1431–1440} }

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