Vibrational dynamics and heat capacity of syndiotactic poly( methyl methacrylate)

被引：5

作者：

Jain, Ashika ^{[1
]}

Misra, Radha Mohan ^{[1
]}

Tandon, Poonam ^{[1
]}

Gupta, Vishwambhar Dayal ^{[1
]}

机构：

[1] Univ Lucknow, Dept Phys, Lucknow 226007, Uttar Pradesh, India

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS | 2006年 / 45卷 / 02期

关键词：

poly(methyl methacrylate); dispersion curves; heat capacity; density-of-states;

D O I：

10.1080/00222340500522356

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The normal modes and their dispersion in syndiotactic poly(methyl methacrylate) are obtained using Wilson's GF matrix method as modified by Higgs. Optically active frequencies corresponding to the zone center and zone boundary are identified and discussed. The Urey Bradley potential field is obtained by least square fitting of the observed infrared and Raman bands. Heat capacity was obtained from dispersion curves via density-of-states. A comparative study of isotactic and syndiotactic forms of poly(methyl methacrylate) is presented.

引用

页码：263 / 284

页数：22

共 36 条

[1] Vibrational dynamics and heat capacity of poly(glycolic acid) [J].

Agarwal, R ;

Misra, RM ;

Tandon, P ;

Gupta, VD .

POLYMER, 2004, 45 (15) :5307-5315

[2] ASSOCIATION OF STEREOREGULAR POLY(METHYL METHACRYLATES) .6. DOUBLE-STRANDED HELICAL STRUCTURE OF THE STEREO-COMPLEX OF ISOTACTIC AND SYNDIOTACTIC POLY(METHYL METHACRYLATE) [J].

BOSSCHER, F ;

TENBRINKE, G ;

CHALLA, G .

MACROMOLECULES, 1982, 15 (05) :1442-1444

[3]

BOWER DI, 1989, VIB SPECTROSC, P154

[4] TRANSITION DIPOLE INTERACTION IN POLYPEPTIDES - ABINITIO CALCULATION OF TRANSITION DIPOLE PARAMETERS [J].

CHEAM, TC ;

KRIMM, S .

CHEMICAL PHYSICS LETTERS, 1984, 107 (06) :613-616

[5] ASSIGNMENT OF THE CARBON-HYDROGEN STRETCHING AND BENDING VIBRATIONS OF POLY(METHYL METHACRYLATE) BY SELECTIVE DEUTERATION [J].

DIRLIKOV, SK ;

KOENIG, JL .

APPLIED SPECTROSCOPY, 1979, 33 (06) :555-561

[6] NORMAL-MODE ANALYSIS OF INFRARED AND RAMAN-SPECTRA OF CRYSTALLINE ISOTACTIC POLY(METHYL METHACRYLATE) [J].

DYBAL, J ;

KRIMM, S .

MACROMOLECULES, 1990, 23 (05) :1301-1308

[7] NORMAL COORDINATE ANALYSIS OF INFRARED AND RAMAN-SPECTRA OF SYNDIOTACTIC POLY(METHYL METHACRYLATE) [J].

DYBAL, J .

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS, 1991, 56 (08) :1653-1661

[8] ORDERED STRUCTURES OF SYNDIOTACTIC POLY(METHYL METHACRYLATES) STUDIED BY A COMBINATION OF INFRARED, RAMAN, AND NMR-SPECTROSCOPY [J].

DYBAL, J ;

SPEVACEK, J ;

SCHNEIDER, B .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (03) :657-674

[9] STUDY OF THE EFFECT OF AGGREGATION ON THE STRUCTURE OF SYNDIOTACTIC POLY(METHYL METHACRYLATE) BY INFRARED-SPECTRA OF ITS DEUTERATED ANALOGS [J].

DYBAL, J ;

SCHNEIDER, B ;

MIHAILOV, M .

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS, 1984, 49 (10) :2259-2268

[10] C=O STRETCH MODE SPLITTING IN THE FORMIC-ACID DIMER - ELECTROSTATIC MODELS OF THE INTERMONOMER INTERACTIONS [J].

DYBAL, J ;

CHEAM, TC ;

KRIMM, S .

JOURNAL OF MOLECULAR STRUCTURE, 1987, 159 (1-2) :183-194

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