Enhancement of Interfacial Adhesion between Amorphous Polyamide and Polystyrene by in-Situ Copolymer Formation at the Interface

Lee, Yeonsoo; Char, Kookheon

doi:10.1021/ma00087a032

Cited by 84 publications

(61 citation statements)

References 2 publications

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“…First, they reduce the number of direct contacts between homopolymers, thereby reducing the interfacial tension [10][11][12][13][14][15][16][17]. Second, they significantly enlarge the interfacial region, where polymers bridging the interface between the coexisting phases can entangle, thereby increasing the fracture toughness [18,19]. Note that in pure homopolymer interfaces, the entanglements which contribute to the mechanical stability are those between polymers of different type, and are thus confined to the narrow region where A and B polymers actually come into contact.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo simulations of copolymers at homopolymer interfaces: Interfacial structure as a function of the copolymer density

Werner

Schmid

Müller

1999

The Journal of Chemical Physics

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Abstract. By means of extensive Monte Carlo simulations of the bond fluctuation model, we study the effect of adding AB diblock copolymers on the properties of an interface between demixed homopolymer phases. The parameters are chosen such that the homopolymers are strongly segregated, and the whole range of copolymer concentrations in the two phase coexistence region is scanned. We compare the "mushroom" regime, in which copolymers are diluted and do not interact with each other, with the "wet brush" regime, where copolymers overlap and stretch, but are still swollen by the homopolymers. A "dry brush" regime is never entered for our choice of chain lengths. "Intrinsic" profiles are calculated using a block analysis method introduced by us in earlier work. We discuss density profiles, orientational profiles and contact number profiles. In general, the features of the profiles are similar at all copolymer concentrations, however, the profiles in the concentrated regime are much broader than in the dilute regime. The results compare well with self-consistent field calculations.

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Section: Introductionmentioning

confidence: 99%

Monte Carlo simulations of copolymers at homopolymer interfaces: Interfacial structure as a function of the copolymer density

Werner

Schmid

Müller

1999

The Journal of Chemical Physics

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“…between two phases in the procedure of blending. 8 However, the flame-retarded ABS blend is a different system from the above polymer blends, which consists of the matrix and addi-EXPERIMENTAL tives, including the flame retardant and the flame-retardant assistant. Besides the organic / Materials organic interface, the organic / inorganic interface also exists in this system.…”

Section: Methodsmentioning

confidence: 99%

Polymer blends with modified coupling agent. I. Preparation and thermal properties of LICA 44 grafted styrene-maleic anhydride copolymer

Chiang

1998

J. Appl. Polym. Sci.

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Neopentyl(diallyl)oxy, tri( N-ethyleneamino)ethyl titanate (LICA 44) was grafted to the styrene/maleic anhydride (SMA) copolymer for the purpose of obtaining a new interfacial coupling agent for flame retardant ABS blends. The graft reaction was proceeded in DMSO under 80ЊC and reduced pressure. Samples were prepared under various amine/anhydride ratios (AAR) in feed and reaction time. The verification of reaction was based on FTIR spectra and the results of elemental analysis. The reaction percentages were high but decreased with the rising AAR. Both combination types, amide acid and imide, of SMA and LICA 44 were found, and the ratio of amide acid and imide is related to the AAR and reaction time. After the graft reaction, both the initial pyrolysis temperature (T pi ) and the char yield at 800ЊC of SMA increased significantly. LICA 44 is believed to cause the char promoting effect on SMA-g-L44.And the dealcohol phenomenon of trimethylolpropane diallyl ether (TMPDE) away from SMA-g-L44 was observed during the thermal analysis.

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“…[22][23][24] Lee and Char 22 explained the remarkable increase in fracture toughness of the interface over a certain interfacial region in which the diffusion and reaction are comparable. Yukioka and Inoue 23 found that the formation of a thick interface was achieved at an appropriate reaction rate.…”

Section: Surface Roughnessmentioning

confidence: 99%

In situ compatibilization of PET/PS blends through carbamate-functionalized reactive copolymers

Lee

Park

Yoo

et al. 2000

J. Polym. Sci. B Polym. Phys.

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Enhancement of Interfacial Adhesion between Amorphous Polyamide and Polystyrene by in-Situ Copolymer Formation at the Interface

Cited by 84 publications

References 2 publications

Monte Carlo simulations of copolymers at homopolymer interfaces: Interfacial structure as a function of the copolymer density

Monte Carlo simulations of copolymers at homopolymer interfaces: Interfacial structure as a function of the copolymer density

Polymer blends with modified coupling agent. I. Preparation and thermal properties of LICA 44 grafted styrene-maleic anhydride copolymer

In situ compatibilization of PET/PS blends through carbamate-functionalized reactive copolymers

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