•Reinforcing fillers for polymer composites made from nonwoven organic materials

2018 ◽  
Vol 0 (10) ◽  
pp. 9-13
Author(s):  
A. N. Marycheva ◽  
◽  
T. A. Guzeva ◽  
P. M. Pye ◽  
L. Kh. Tun ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Organic Materials ◽  
Reinforcing Fillers

Hemp Fiber Reinforced Composites: Morphological and Mechanical Properties

2011 ◽  
Vol 332-334 ◽  
pp. 121-125
Author(s):  
Xing Mei Guo ◽  
Yi Ping Qiu
Keyword(s):  
Polymer Composites ◽  
Unsaturated Polyester ◽  
Glass Fibers ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Hemp Fiber ◽  
Plant Fibers ◽  
Natural Plant ◽  
Reinforcing Fillers

The use of natural plant fibers as reinforcing fillers in fiber-polymer composites has drawn much interest in recent years. Natural plant fibers as reinforcing fillers have several advantages over inorganic fillers such as glass fibers; they are abundant, readily available, renewable, inexpensive, biodegradable, of low density, and of high specific strength. Hemp fibers are one of the most attractive natural plant fibers for fiber-reinforced composites because of their exceptional specific stiffness. In this review, we summarize recent progress in developments of the hemp fiber reinforced composites such as hemp fiber reinforced unsaturated polyester (UPE), hemp fiber reinforced polypropylene (PP), hemp fiber reinforced epoxy composites, and so on, illustrate with examples how they work, and discuss their intrinsic fundamentals and optimization designs. We are expecting the review to pave the way for developing fiber-polymer composites with higher strength.

scholarly journals Some Applications of Vibrational Spectroscopy for the Analysis of Polymers and Polymer Composites

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1159 ◽  
Author(s):  
Liliane Bokobza
Keyword(s):  
Polymer Composites ◽  
Vibrational Spectroscopy ◽  
Near Infrared ◽  
Nir Spectroscopy ◽  
Polymeric Materials ◽  
Molecular Structures ◽  
Hydroxyl Groups ◽  
Inorganic Particles ◽  
Reinforcing Fillers

Vibrational spectroscopies, including infrared and Raman techniques, are important tools for the characterization of chemical composition, molecular structures, and chain orientation under mechanical deformation of polymeric materials. The development of fiber-optic-based spectrometers has broadened the use of vibrational spectroscopy for process monitoring in various fields including polymerization, curing, and manufacturing processes. Combined with chemometrics, near-infrared (NIR) spectroscopy is now recognized as one of the most important techniques for polymer analyses. Infrared and Raman studies also offer invaluable means for the analysis of inorganic particles used as reinforcing fillers for polymers. The characterization of surface species and the nature of interfacial bonding between the organic and inorganic phases are important issues for the understanding of composite properties. Infrared spectroscopy is particularly convenient for the detection and analysis of hydroxyl groups on filler surfaces, and Raman spectroscopy is particularly well suited for the study of carbon-based materials. In both techniques, polymer-filler interactions can be evidenced through frequency shifts or width changes of bands associated with vibrational modes of functional groups of either macromolecular chains or filler particles. Selected examples of application of infrared and Raman spectroscopies illustrate their potential for monitoring polymer processes, measuring polymer orientation, and characterizing polymer composites.

Reinforcing Fillers for Polymer Composites Based on Organic Unwoven Materials

2019 ◽  
Vol 12 (2) ◽  
pp. 170-173 ◽  
Author(s):  
A. N. Marycheva ◽  
T. A. Guzeva ◽  
P. M. P’e ◽  
L. Kh. Tun ◽  
G. V. Malysheva
Keyword(s):  
Polymer Composites ◽  
Reinforcing Fillers

Polymer Composites Utilizing Electronic Waste as Reinforcing Fillers: Mechanical and Rheological Properties

2017 ◽  
Vol 1 (1) ◽  
pp. 86-95 ◽  
Author(s):  
Abhishek Kumar ◽  
Veena Choudhary ◽  
Rita Khanna ◽  
Partha S. Mukherjee ◽  
Romina Cayumil ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Polymer Composites ◽  
Electronic Waste ◽  
Reinforcing Fillers

scholarly journals Nanocellulose Xerogel as Template for Transparent, Thick, Flame-Retardant Polymer Nanocomposites

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3032
Author(s):  
Wataru Sakuma ◽  
Shuji Fujisawa ◽  
Lars A. Berglund ◽  
Tsuguyuki Saito
Keyword(s):  
Polymer Composites ◽  
Flexural Modulus ◽  
Cellulose Nanofibers ◽  
High Strength ◽  
High Porosity ◽  
Load Bearing ◽  
Surface Areas ◽  
Reinforced Composite ◽  
Reinforcing Fillers ◽  
The Matrix

Cellulose nanofibers (CNFs) have excellent properties, such as high strength, high specific surface areas (SSA), and low coefficients of thermal expansion (CTE), making them a promising candidate for bio-based reinforcing fillers of polymers. A challenge in the field of CNF-reinforced composite research is to produce strong and transparent CNF/polymer composites that are sufficiently thick for use as load-bearing structural materials. In this study, we successfully prepared millimeter-thick, transparent CNF/polymer composites using CNF xerogels, with high porosity (~70%) and high SSA (~350 m2 g−1), as a template for monomer impregnation. A methacrylate was used as the monomer and was cured by UV irradiation after impregnation into the CNF xerogels. The CNF xerogels effectively reinforced the methacrylate polymer matrix, resulting in an improvement in the flexural modulus (up to 546%) and a reduction in the CTE value (up to 78%) while maintaining the optical transparency of the matrix polymer. Interestingly, the composites exhibited flame retardancy at high CNF loading. These unique features highlight the applicability of CNF xerogels as a reinforcing template for producing multifunctional and load-bearing polymer composites.

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