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Showing papers in "European Polymer Journal in 1983"


Journal ArticleDOI
TL;DR: Polyethylene glycol was used as a carrier polymer for the attachment, via end groups, of drugs such as penicillin V, aspirin, amphetamine, quinidine and atropine.

467 citations


Journal ArticleDOI
TL;DR: In this article, the results of functionalization experiments of isotactic polypropylene (IPP) and atactic polyethylene (APP) with MES, diethylfumarate and diethylamaleate have been carried out in solution and in bulk, in the presence of dicumylperoxide.

118 citations


Journal ArticleDOI
TL;DR: In this paper, detailed viscometric and ultrasonic velocity studies have been conducted on solutions of blends of poly(methyl methacrylate) with poly(vinyl acetate), poly (vinyl chloride) and poly(polystyrene) over an extended range of concentrations and temperatures.

108 citations


Journal ArticleDOI
TL;DR: A series of thermotropic poly(2-n-alkyl-1,4-phenylene terephthalates) was synthesized and characterized for liquid crystalline properties by differential scanning calorimetry (DSC) and by use of a polarizing microscope as mentioned in this paper.

102 citations


Journal ArticleDOI
TL;DR: In this article, the ring-opening polymerization of lactones was studied in detail by varying the initiator and monomer concentrations and it was concluded that the polymerization initiated with TIBA proceeds very probably through a coordinated insertion of the lactone monomer into the aluminium-carbon bond.

78 citations


Journal ArticleDOI
TL;DR: In this article, the fluorescence intensity of dansyl residues attached to poly(acrylic acid) (PAA) increases sharply when PAA forms complexes with polyoxyethylene (POE) or poly(vinyl pyrrolidone)(PVP), because the emission from this chromophore is more intense in organic media than in water.

75 citations


Journal ArticleDOI
TL;DR: A mathematical procedure for the investigation of the lattice disorder by stacking faults in polycrystalline solids has been used in studying samples of MgCl2 activated by ball milling for various times in the presence of TiCl4 as discussed by the authors.

65 citations


Journal ArticleDOI
TL;DR: In this paper, a method has been developed to synthesize cyclic polystyrene molecules, by reacting bifunctional living poly styrene with α,α′ dibromo-p -xylene.

65 citations


Journal ArticleDOI
TL;DR: In this article, a 2-hydroxyethylmethacrylate (HEMA) in bulk without any radical initiator is treated with a polarized microwave beam inside a wave guide at various electrical powers (P0).

60 citations


Journal ArticleDOI
TL;DR: In this article, the content of short isotactic segments and thermal properties in some propylene/olefin random copolymers were investigated, and it was shown that the weldability temperature decreases on increasing the comonomer concentration.

59 citations


Journal ArticleDOI
TL;DR: In this paper, a thermal analysis of complete systems, including the polymeric substrate, and comprehensive studies (e.g. by triangular diagrams) of the flammability is presented.

Journal ArticleDOI
TL;DR: In this article, the photo-oxidation of butadiene rubber (BR) was studied in detail using films of a commercially available material, containing 33% cis-1,4-, 56% trans 1,4- and 12% 1,2-vinylic units.

Journal ArticleDOI
TL;DR: In this article, the authors analyzed the free volume distribution of polycarbonate polyethersulphone and polysuloxide over the temperature range 260-370 K. The data were analyzed into three components, the longest lifetime component associated with the pick-off mechanism; a linear variation of that component with temperature was observed.

Journal ArticleDOI
TL;DR: In this article, the template polymerization of methacrylic acid (MAA) along atactic poly(2-vinylpyridine) (P2VP) template has been studied by varying the template concentration from 0.05 to 0.6 base M at fixed [MAA] 0 = 0.4 M at 30°.

Journal ArticleDOI
TL;DR: In this paper, a packing energy analysis for isotactic polypropylene chains was performed with the purpose of predicting the most stable kind of monoclinic lattice for the α-modification.

Journal ArticleDOI
TL;DR: In this paper, a topological extrapolation method for the calculation of various properties (melting points, refractive indices, specific rotation, etc.) of infinite linear polymers is developed.

Journal ArticleDOI
TL;DR: In this article, block copolymers consisting of poly(N-acylethylenimine) and poly(ethylene oxide) chains were prepared by initiating the polymerization of 2-methyl-2-oxazoline (MeOZO) and 2-ethyl-2oxoxoline (EtOZOL) with α,ω-di-sulphonylated poly(methylene oxide).

Journal ArticleDOI
TL;DR: In this article, some methods of general applicability for chemical grafting to linear poly(ether-urethanes) are described. But none of the currently-favoured methods is satisfactory for the preparation of well-characterized linear grafts of this kind.

Journal ArticleDOI
TL;DR: In this article, the microstructure de la chaine a pu etre determinee par NMR du carbone 13, and les hauts polymeres du glycidol sont peu solubles dans les solvants courants, rend difficile l'etude de leurs proprietes.

Journal ArticleDOI
TL;DR: In this paper, the properties of compatible and incompatible poly(methyl methacrylate)-poly(vinyl acetate)-polystyrene blends have been studied by ultrasonic velocity measurements.

Journal ArticleDOI
TL;DR: In this article, a spectroscopic investigation into the thermal stabilization of PVC by calcium and zinc metal soap systems has yielded new information on the role of these stabilizers, including the chemical and physical properties imparted to the matrix by the additives determine the rate of thermal degradation during processing in the Haake rheocorder.

Journal ArticleDOI
TL;DR: In this article, fire retardance and smoke suppression were studied in three systems containing acrylonitrile-butadiene-styrene terpolymer, decabromobiphenyl, and commercial metastannic acid.

Journal ArticleDOI
TL;DR: The retention behaviour of lymphnode lymphocytes was studied as a function of contact time by using a column method: the cell suspension was passed through a “column” packed with polymer-coated glass beads, indicating that preferential retention of B cells over T cells took place on these surfaces.

Journal ArticleDOI
TL;DR: In this article, the thermal and photochemical behavior of several unstabilised polypropylene samples made experimentally by a gas phase (GP) process has been examined and compared with those of samples made commercially by the normal diluent phase (DP) process.

Journal ArticleDOI
TL;DR: In this paper, the gelation enthalpy of chlorinated polyethylene was determined from the concentration dependence of gelation temperature and a linear relationship between the heat of gelations and the solid state crystallinity was observed.

Journal ArticleDOI
TL;DR: In this paper, acrylic acid was polymerized in dilute aqueous solution in the presence of a series of polyvinylpyrrolidones (PVP) of different molecular weight.

Journal ArticleDOI
TL;DR: The copolymers are tough thermoplastics with values of yield stress, stress at 100% elongation, and modulus all tending to a minimum for the compositions of lowest crystallinity and highest birefringence.

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the flammability and smoke-forming tendency of systems containing widely varying proportions of an acrylonitrile-butadiene-styrene terpolymer (ABS), decabromobiphenyl (DBB) and anhydrous aluminium(III) oxide, (b) aluminium oxide monohydrate and (c) aluminium trihydrate.

Journal ArticleDOI
TL;DR: In this article, photo-assisted hydrolysis of melamine ether crosslinks yields formaldehyde which can promote free radical oxidation leading to a more rapid photodegradation of these coatings under humid conditions than under dry conditions.

Journal ArticleDOI
TL;DR: In this paper, the stability of small molecules with I3− is investigated in the series PVMA M n changing from 6 × 103 to 2 × 103 and copolymers of N-vinyleaprolactam with polyvinylpyrrolidone (CP VCL-VP) and with poly-vinyl-N-methylacetamide (VMA) were studied.