A study of poly(hydroxyalkanoate)s by quantitative P-31 NMR spectroscopy: Molecular weight and chain cleavage

被引：50

作者：

Spyros, A ^{[1
]}

Argyropoulos, DS ^{[1
]}

Marchessault, RH ^{[1
]}

机构：

[1] MCGILL UNIV, PULP & PAPER RES CTR, MONTREAL, PQ H3A 2A7, CANADA

来源：

MACROMOLECULES | 1997年 / 30卷 / 02期

关键词：

D O I：

10.1021/ma9601979

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A stock solution was prepared by dissolving approximately 400 mg of Bisphenol A (BPA) in pyridine, adding 5.5 mg of Cr(acac)3 and bringing the total volume to 10 mL. The polymers were dissolved in CDCl3 heating gently if necessary with concentration of 50-100 mg/mL. A 400 μL of the polymer solution and 40 μL of the stock solution were transferred into a 5 mm NMR tube. The mixture was left to react overnight. Quantitative paramagnetic nuclear magnetic resonance (PNMR) spectroscopy was found to be a valuable tool for the determination of number-average molecular weight of poly(hydroxy alkanoate) homo- and copolymers.

引用

页码：327 / 329

页数：3

共 22 条

[1] P-31 NMR-SPECTROSCOPY IN WOOD CHEMISTRY .1. MODEL COMPOUNDS [J].

ARCHIPOV, Y ;

ARGYROPOULOS, DS ;

BOLKER, HI ;

HEITNER, C .

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 1991, 11 (02) :137-157

[2] QUANTITATIVE P-31 NMR ANALYSIS OF LIGNINS, A NEW TOOL FOR THE LIGNIN CHEMIST [J].

ARGYROPOULOS, DS .

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 1994, 14 (01) :45-63

[3] P-31 NMR-SPECTROSCOPY IN WOOD CHEMISTRY .4. LIGNIN MODELS - SPIN-LATTICE RELAXATION-TIMES AND SOLVENT EFFECTS IN P-31 NMR [J].

ARGYROPOULOS, DS ;

BOLKER, HI ;

HEITNER, C ;

ARCHIPOV, Y .

HOLZFORSCHUNG, 1993, 47 (01) :50-56

[4] P-31 NMR IN WOOD CHEMISTRY - A REVIEW OF RECENT PROGRESS [J].

ARGYROPOULOS, DS .

RESEARCH ON CHEMICAL INTERMEDIATES, 1995, 21 (3-5) :373-395

[5]

BLOEMBERGEN S, 1987, THESIS U WATERLOO WA

[6]

BURGER HM, 1993, MACROMOLECULES, V26, P4783

[7] FACILE QUANTITATIVE-ANALYSIS OF HYDROXYL END-GROUPS OF POLY(2,6-DIMETHYL-1,4-PHENYLENE OXIDE)S BY P-31 NMR-SPECTROSCOPY [J].

CHAN, KP ;

ARGYROPOULOS, DS ;

WHITE, DM ;

YEAGER, GW ;

HAY, AS .

MACROMOLECULES, 1994, 27 (22) :6371-6375

[8]

DOI Y, 1990, MACROMOLECULES, V23, P26, DOI 10.1021/ma00203a006

[9]

Doi Y., 1990, MICROBIAL POLYESTERS

[10] 2-CHLORO-4,4,5,5-TETRAMETHYL-1,3,2-DIOXAPHOSPHOLANE, A REAGENT FOR THE ACCURATE DETERMINATION OF THE UNCONDENSED AND CONDENSED PHENOLIC MOIETIES IN LIGNINS [J].

GRANATA, A ;

ARGYROPOULOS, DS .

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 1995, 43 (06) :1538-1544

← 1 2 3 →