MISCIBILITY STUDIES IN POLYMER DILUENT BLENDS AND SEGMENTED BLOCK COPOLYMERS VIA HIGH-RESOLUTION C-13 SOLID-STATE NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY

被引：17

作者：

BELFIORE, LA

机构：

[1] Colorado State Univ, Dep of, Agricultural & Chemical, Engineering, Fort Collins, CO, USA, Colorado State Univ, Dep of Agricultural & Chemical Engineering, Fort Collins, CO, USA

来源：

POLYMER | 1986年 / 27卷 / 01期

关键词：

at; 68; wt~; polyestert; h erei s enoughin tersegmenmti xing in the mobile domains to strengthenp roton dipolar communicationto the extent that the Tlp(1H) time constantfso r the polyethecr arbonsa re essentiallayv er-aged by spin diffusion.H ence; the n.m.r; resultsf avoura morphologicadl escriptiono f the Hytrel copolymersin which a substantiaflr actionof uncrystallizepdo lyester segmentasr ewell mixedi n the polyether-ricahm orphous domains. SUMMARY High-resolutio1n3 Cn .m.r; s pectroscophya sb eenu sedto investigatme ixingat the moleculalre velin (i) a blend of poly(methyml ethacrylatew)i th dinitrobiphenyaln d (ii) a series of well characterizepdo lyether-polyestbelro ck copolymersI.n the polymer-diluenbtl end; one observes intermoleculacrr oss-polarizatiotrna nsfefrr om ~H nuclei in the diluentt o ~3 C nuclei in the perdeuteratepdo lymer. This is evidencefo r intimatem ixingon a molecule-for-moleculeb asis.I n the short-segmentbeldo ckcopolymers (Hytrelc opolymerso); n eo bservetsh et ransfeor f magnetization from polyether protons to polyesterc arbons. However; it was not possible to distinguishb etween intersegmenatn di ntermoleculacrr oss-polarizatiomne ch-anisms in the Hytrel copolymers having completely deuteratedp olyesters egmentsN. everthelesst; h e n.m.r. resultsa rguein favour of a morphologicadle scriptioonf Hytrel that placesa substantiafrl actiono f uncrystallized polyester segmentsi n the well mixed polyether-rich amorphousre gionsT. hesec onclusionas re supportedb y resultsf rom thermala nalysis. ACKNOWLEDGEMENTS The author is gratefult o the PetroleumR esearchF und administeredb y the American Chemical Society for partial support of this work through Grant No. 16208-G7. Funds were also obtainedfr om the Colorado State UniversityR esearchF oundationt hroughits Resources for Scholarly Programsa nd an ASEE Summer Faculty Fellowshipa t the Solar Energy ResearchIn stituteG; olden; Colorado.S peciatl hanksa redue to ProfessoSr tuart L. Cooper; U niversityo f Wisconsin-Madisofno; r providing duPont's Hytrel copolymersF.. C. Schilling and H. Schonhorno f AT&T Bell Laboratoriewse rekind enough to characterizeth e percentaged euterationo f the d s-PMMA used in this study via n.m.r; and FTi.r. spectroscopies.T he solid-statne. m.r; work describedh ereinw as performeda t the RegionaNl MR Center; C oloradoState Universityf; u ndedb y NSF under grant no. CHE-820881. Finally; Ms Sharon Pattersond eservews arm thanks for typing the manuscript;

D O I：

10.1016/0032-3861(86)90359-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

引用

页码：80 / 90

页数：11

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