Introduction of polymers into fibrous structures by solution impregnation

Rigdahl, Mikael; Westerlind, Bo; Hollmark, H.; Ruvo, Alf de

doi:10.1002/app.1983.070280505

Cited by 26 publications

(19 citation statements)

References 8 publications

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“…It is plausible that the network strength is determined by the strength of the fiber-polymer-fiber bonds. 7 The results given in Figure 2 suggests that the total effective size (or volume) of such bonds is independent of the solvent used. It is, however, not clear whether the bond breakage is of a cohesive nature, i. e., the polymer film ruptures, or of the adhesive kind (failure along the interface).…”

mentioning

confidence: 86%

The effect of cellulose–solvent interaction on the mechanical properties of bonded fibrous structures

Rigdahl¹,

Ruvo²

1984

J. Appl. Polym. Sci.

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&no psisThe mechanical properties, i. e., the tensile strength, tensile modulus, elongation a t rupture, and tensile energy absorption (work of rupture), of a dry-formed network of cellulose fibers are shown to be substantially improved by impregnation of the network with organic solutions of poly(viny1 acetate) (PVAC). With the exception of the tensile strength, the improvement of the mechanical properties in the dry state is, however, dependent not only on the polymer content, but also on the interaction between the solvent and the cellulose fibers constituting the network. A solvent which interacts strongly with cellulose produces a stiffer and less ductile network than a more inert liquid. It is suggested that this effect is the result of a change in the cellulosic network structure itself. The solvents used in this study were methanol, acetone, ethyl acetate, chloroform, and toluene.

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mentioning

confidence: 86%

The effect of cellulose–solvent interaction on the mechanical properties of bonded fibrous structures

Rigdahl¹,

Ruvo²

1984

J. Appl. Polym. Sci.

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“…In order to evaluate the interaction between cellulosic materials and synthetic polymers, the dynamic mechanical properties for several combinations of cellulosics and polymers have been studied by different groups [31][32][33][34][35][36]. It was found from the dynamic mechanical property data that the dynamic loss modulus (E"m.,) of the composite system was generally higher than that of the respective bulk polymer.…”

Section: Dynamic Mechanical Properties and Tmentioning

confidence: 99%

Interfacial adhesion of lignocellulosic materials in polymer composites: an overview

Maldas

Kokta

1993

Composite Interfaces

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Cellulosic materials have long been used as cost-cutting fillers in the plastic industry. Among the various factors which determine the final performance of the composite materials depend, to a large extent, on the adhesion between the polymer matrix and the reinforcements, and, therefore, on the quality of the interface. In fact, the majority of cellulosic raw materials are lignocellulosics of different polarity to plastics, and due to this divergent behavior, the adhesion between cellulosic materials and polymer matrices is very poor. However, a sufficient degree of interaction or adhesion between the surface of the cellulosic materials and matrix resin is usually desired to achieve an optimum performance of the end-product. In many cases surface modification of the cellulosics or the matrix resins, using various additives, vinyl monomers, or coupling agents, are considered to be essential to achieve this goal.The present paper surveys research work published in this field with special emphasis on the cellulosic materials' surface chemistry, morphology, as well as interfacial properties of the composites in order to elucidate the role of surface treatments. In order to elucidate the mechanism of interaction on molecular level, it is necessary to employ various techniques, such as spectroscopy that can measure surface events. In fact, the complexity of the interphase region requires a variety of characterization methods for the thorough understanding of the physical and chemical nature of this region. Moreover, a proper combination of different techniques is necessary to provide a true picture of the interphase.

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“…The phenolic resin‐bonded nonwoven fabric composites have been used as a material for supporting and covered parts in automobile industry 20. The mechanical properties of nonwoven fabric are insufficient even to some nonstructural applications and hence, polymeric binders/resins21–27 are incorporated to enhance the same. In the previous communication,28 we have studied the effect of different weight ratio of St/BA latex on the mechanical performance of polyester nonwoven fabric impregnated poly(styrene‐ co ‐butyl acrylate) composites.…”

Section: Introductionmentioning

confidence: 99%

Poly(styrene‐co‐butyl acrylate) latex‐reinforced polyester nonwoven fabric composites: Thermal and morphological studies

Kumar

Yaakob

Siddaramaiah³

2009

J of Applied Polymer Sci

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A series of thermoplastic composites were fabricated by impregnating the polyester nonwoven fabric in poly(styrene-co-butyl acrylate) latex having different monomer compositions of styrene and butyl acrylate viz., 100/0, 90/10, 80/20, 70/30, 60/40, and 50/50 weight by weight. Thermogravimetric analysis (TGA) of the composites was performed to establish the thermal stability and their mode of thermal degradation. From TGA thermograms, a slight improvement in thermal stability of the composites was noticed compared to polyester nonwoven fabric. Degradation kinetic parameters were obtained for the composites using Broido and Coats-Redfern methods. The activation energy (E a ) of the composites for the thermal degradation process lies in the range 7.1-261 and 60-264 kJ/mol for Broido and Coats-Redfern methods respectively. Morphology of the tensile-fractured composites was studied using scanning electron microscopic technique.

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Introduction of polymers into fibrous structures by solution impregnation

Cited by 26 publications

References 8 publications

The effect of cellulose–solvent interaction on the mechanical properties of bonded fibrous structures

The effect of cellulose–solvent interaction on the mechanical properties of bonded fibrous structures

Interfacial adhesion of lignocellulosic materials in polymer composites: an overview

Poly(styrene‐co‐butyl acrylate) latex‐reinforced polyester nonwoven fabric composites: Thermal and morphological studies

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