Evolution of phase morphology in compatibilized polymer blends at constant quench depths: complementary studies by light scattering and transmission ... article from: Polymer Engineering and Science
Book Details
Author(s)C.L. Jackson, L. Sung, C.C. Han
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00097SL8C
ISBN-13978B00097SL84
MarketplaceUnited Kingdom 🇬🇧
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on September 1, 1997. The length of the article is 7205 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: The effect of added block copolymer on the phase separation and morphology evolution in a partially miscible blend of polystyrene and polybutadiene near the critical composition is studied by temperature jump light scattering (TJLS) and transmission electron microscopy (TEM). As block copolymer is added, the phase boundary is shifted to lower temperatures and the phase separation process is slowed dramatically. Since the quench depth greatly affects the rate of phase separation in any blend system, we have used equivalent quench depths by adjusting for the shift in the phase boundary as block copolymer is added. The morphology evolution of these ternary blends was studied by preparing TEM specimens at equivalent shallow quench depths ([Delta]T = 1.6 [degrees] C) and allowing each blend mixture to coarsen for the time required to reach a specific constant size, or q-value, using the TJLS data on the kinetics of phase separation. The q-range selected was q [similar to] 0.003-0.005 [nm.sup.-1], which corresponds to a spacing of 1-2 [[micro]meter] in real space. The combination of light scattering and microscopy techniques more rigorously describes the compatibilization process in these complex ternary systems.
Citation Details
Title: Evolution of phase morphology in compatibilized polymer blends at constant quench depths: complementary studies by light scattering and transmission electron microscopy.
Author: C.L. Jackson
Publication:Polymer Engineering and Science (Refereed)
Date: September 1, 1997
Publisher: Society of Plastics Engineers, Inc.
Volume: v37 Issue: n9 Page: p1449(10)
Distributed by Thomson Gale
From the author: The effect of added block copolymer on the phase separation and morphology evolution in a partially miscible blend of polystyrene and polybutadiene near the critical composition is studied by temperature jump light scattering (TJLS) and transmission electron microscopy (TEM). As block copolymer is added, the phase boundary is shifted to lower temperatures and the phase separation process is slowed dramatically. Since the quench depth greatly affects the rate of phase separation in any blend system, we have used equivalent quench depths by adjusting for the shift in the phase boundary as block copolymer is added. The morphology evolution of these ternary blends was studied by preparing TEM specimens at equivalent shallow quench depths ([Delta]T = 1.6 [degrees] C) and allowing each blend mixture to coarsen for the time required to reach a specific constant size, or q-value, using the TJLS data on the kinetics of phase separation. The q-range selected was q [similar to] 0.003-0.005 [nm.sup.-1], which corresponds to a spacing of 1-2 [[micro]meter] in real space. The combination of light scattering and microscopy techniques more rigorously describes the compatibilization process in these complex ternary systems.
Citation Details
Title: Evolution of phase morphology in compatibilized polymer blends at constant quench depths: complementary studies by light scattering and transmission electron microscopy.
Author: C.L. Jackson
Publication:Polymer Engineering and Science (Refereed)
Date: September 1, 1997
Publisher: Society of Plastics Engineers, Inc.
Volume: v37 Issue: n9 Page: p1449(10)
Distributed by Thomson Gale
