The silane/sizing composite interphase

Al-Moussawi, Hassan; Drown, Edward; Drzal, Lawrence T.

doi:10.1002/pc.750140304

Cited by 42 publications

(17 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After fiber spinning, sizings [17] that contain the SCAs, as well as film formers and various surfactants, are applied to glass fibers. The sizing application produces a nanoscale region within the matrix surrounding the glass fiber referred to as the "interphase", since it is a complex interpenetrating-polymer network that can have graded material properties, different from the bulk polymer [18][19][20][21][22][23][24]. The sizing-induced interphase formed around glass fibers can have a lower glass transition temperature [25] and reduced elastic stiffness [26].…”

Section: Introductionmentioning

confidence: 99%

Polymer nanocomposite – fiber model interphases: Influence of processing and interface chemistry on mechanical performance

Rider

Brack

et al. 2015

Chemical Engineering Journal

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Polymer nanocomposite – fiber model interphases: Influence of processing and interface chemistry on mechanical performance

Rider

Brack

et al. 2015

Chemical Engineering Journal

View full text Add to dashboard Cite

“…Silane coupling agents are one of many ingredients in commercial sizing that are applied to fibers. The chemical composition of coupling agents allows them to react with the fiber surface and forms a bridge of chemical bonds between the fiber and matrix (Al-Moussawi et al 1993). Generally, coupling agents are molecules possessing two functions.…”

Section: Theoretical Perspectivesmentioning

confidence: 99%

Pre-treatment of Flax Fibers for use in Rotationally Molded Biocomposites

Wang

Panigrahi²,

Tabil³

et al. 2007

Journal of Reinforced Plastics and Composites

264

118

View full text Add to dashboard Cite

Flax fibers can be used as environmentally friendly alternatives to conventional reinforcing fibers (e.g., glass) in composites. The interest in natural fiber-reinforced polymer composites is growing rapidly due to its high performance in terms of mechanical properties, significant processing advantages, excellent chemical resistance, low cost and low density. These advantages place natural fiber composites among the high performance composites having economic and environmental advantages. In the field of technical utilization of plant fibers, flax fiber-reinforced composites represent one of the most important areas. On the other hand, lack of good interfacial adhesion and poor resistance to moisture absorption make the use of natural fiber-reinforced composites less attractive. In order to improve their interfacial properties, fibers were subjected to chemical treatments, namely, mercerization, silane treatment, benzoylation, and peroxide treatment. Selective removal of non-cellulosic compounds constitutes the main objective of the chemical treatments of flax fibers to improve the performance of fiber-reinforced composites. The objective of this study was to determine the effects of pre-treated flax fibers on the performance of the fiber-reinforced composites.Short flax fibers were derived from Saskatchewan-grown flax straws, for use in fiberreinforced composites. Composites consisting of high-density polyethylene (HDPE) or linear low-density polyethylene (LLDPE) or HDPE/LLDPE mix, chemically treated fibers and additives were prepared by the extrusion process. Extrusion is expected to improve the interfacial adhesion significantly as opposed to simple mixing of the two iii components. The extruded strands were then pelletized and ground. The test samples were prepared by rotational molding. The fiber surface topology and the tensile fracture surfaces of the composites were characterized by scanning electron microscopy to determine whether the modified fiber-matrix interface had improved interfacial bonding.Mechanical and physical properties of the composites were evaluated. The differential scanning calorimetry technique was also used to measure the melting point of flax fiber and composite.Overall, the scanning electron microscopy photographs of fiber surface characteristics and fracture surfaces of composites clearly indicated the extent of fiber-matrix interface adhesion. Chemically treated fiber-reinforced composites showed better fiber-matrix interaction as observed from the good dispersion of fibers in the matrix system. Special thanks to my graduate committee Charles Maulé, the chair, for providing a motivating and enthusiastic environment during the many discussions and his helpful feedback and suggestions. The critique of this thesis by Dr. Chris Zhang, external examiner, is acknowledged.

show abstract

“…Since the advent of silane coupling agents as a pretreatment of glass fibres to improve the durability of glass fibres, a lot of researches have been conducted to give more informations on the chemistry of the silanes and on the interactions between the glass fibre surface and the matrix [1][2][3][4][5][6]. Nevertheless silanes represent only a small fraction of the sizing system and the extrapolations made with the silane behaviour on glass fibre/matrix adhesion neglect the potential effects of the presence of the other components (lubricants, film formers and antistatic agents).…”

Section: Introductionmentioning

confidence: 99%

Relationships between the glass fibre sizing composition and the surface quality of sheet moulding compounds (SMC) body panels

Feuillade¹,

Bergeret²,

Quantin³

et al. 2006

Composites Science and Technology

View full text Add to dashboard Cite

The characteristics of thermosetting composite materials such as SMC are affected by the presence of reinforcements as a result of surface-matrix interactions. Surface treatments or sizings can significantly affect such interactions; hence the sizing selection may significantly affect SMC characteristics. The wetting properties of the unsaturated polyester matrix on glass fibres with different sizings have been studied by contact angle determination. In addition, the permeability of the glass fibres as well as their stiffness, the sizing solubility and swelling were also studied to understand the impregnation level of the glass fibres by the unsaturated polyester matrix before the curing reaction as a function of the sizing chemistry. The parameters that have been varied to determine the wetting and the adhesion properties provided by surface energies are the followings: (i) the sizing amount; (ii) the antistatic agent nature; (iii) the deposit method of this antistatic agent, and (iv) the film former nature. From these results in relation with the surface quality of corresponding moulded SMC panels, some of these glass fibres were selected. By using a statistical approach (principal components analysis (PCA)), it has been possible to conclude about the influence of the glass fibres characteristics on the surface quality. Correlations have also been established between the glass fibre characteristics, the material flow and the surface quality of the SMC panels.

show abstract

The silane/sizing composite interphase

Cited by 42 publications

References 3 publications

Polymer nanocomposite – fiber model interphases: Influence of processing and interface chemistry on mechanical performance

Polymer nanocomposite – fiber model interphases: Influence of processing and interface chemistry on mechanical performance

Pre-treatment of Flax Fibers for use in Rotationally Molded Biocomposites

Relationships between the glass fibre sizing composition and the surface quality of sheet moulding compounds (SMC) body panels

Contact Info

Product

Resources

About