Preparation of lightweight polypropylene composites reinforced by cotton stalk fibers from combined steam flash-explosion and alkaline treatment

Hou, Xiuliang; Sun, Fangfang; Yan, Dandan; Xu, Helan; Dong, Zhen; Li, Qichao; Yang, Yiqi

doi:10.1016/j.jclepro.2014.07.018

Cited by 48 publications

(23 citation statements)

References 37 publications

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“…A verification test was run with these parameters, and the results showed that the MOE, MOR, and IB were 8.745 GPa, 46.264 MPa, and 0.485 MPa, respectively. These parameters are similar with those from previous studies of OCB composites (Li et al 2003;Song et al 2008;Qi et al 2012;Hou et al 2014).…”

Section: Optimization Of the Pressing Parameterssupporting

confidence: 91%

Preparation and Properties of Oriented Cotton Stalk Board with Konjac Glucomannan-Chitosan-Polyvinyl Alcohol Blend Adhesive

et al. 2015

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The use of formaldehyde-free, biomass-based composites has gained increasing attention in recent years because of their environmental benefits and superior strength properties. In this study, oriented cotton stalk board (OCB) was fabricated with an environmentally friendly, waterbased konjac glucomannan-chitosan-polyvinyl alcohol (KCP) blend adhesive using hot pressing technology. The effects of pressing parameters on the physical and mechanical properties of oriented cotton stalk board were examined in order to obtain optimal pressing parameters. Interfacial bonding surface was also examined with a scanning electron microscope and a fluorescence microscope. The optimal physical and mechanical properties were obtained at a pressing temperature of 150 °C for 15 min with a target density of 0.8 g/cm 3 during hot pressing. Adhesive content and hot pressing pressure had significant influences on adhesion. Mechanical interlocking was also observed between cotton stalks and the adhesive. OCB with KCP blend adhesive has comparable mechanical properties to that with urea formaldehyde resin or phenolic formaldehyde resin. OCB resinated with KCP blend adhesive is environmental friendly and has potential applications in furniture and interior decoration with less stringent requirements for water resistance.

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Section: Optimization Of the Pressing Parameterssupporting

confidence: 91%

Preparation and Properties of Oriented Cotton Stalk Board with Konjac Glucomannan-Chitosan-Polyvinyl Alcohol Blend Adhesive

et al. 2015

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“…These renewable natural fibers have the potential to replace conventional synthetic fibers in various applications, including semistructural automotive components, such as backseats, door inserts, underbody panels, instrument panels, construction, and packaging industry . Due to growing concern with environmental issues, natural fibers have received special attention as a reinforcing load in the polymer matrix, because they have a low cost, come from renewable sources, are readily available and are also biodegradable.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have made progress in the enhancement of the adhesion between natural fibers and matrix by physical and chemical treatments. Alkaline treatments or mercerization are the most commonly used chemical treatments in natural fibers to reinforce thermoplastics . The alkaline treatment of the natural fibers demands costs related to the acquisition of hydroxides, and effluents are generated in the treatment.…”

Section: Introductionmentioning

confidence: 99%

Grape stalk fibers as reinforcing filler for polymer composites with a polystyrene matrix

Borsoi

Menin

Lavoratti

et al. 2019

J of Applied Polymer Sci

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Lignocellulosic fibers have been one of the most used reinforcements for different types of composites. In this context, grape stalks—often discarded in landfills—can be a potential reinforcement for composites. The present study aimed to incorporate in natura and alkali treated grape stalks into the polystyrene (PS) matrix. Initially, the grape stalks were treated with NaOH and 10, 20, and 30 wt % of stalks were added into the PS matrix. The alkaline treatment of the grape stalk fibers promoted the removal of hemicellulose and the partial removal of lignin, thus increasing the surface roughness and crystallinity index of the fibers. An improvement in the mechanical and dynamic‐mechanical properties and an increase in the maximum degradation temperature of the composites were observed. In conclusion, the use of grape stalks is a promising alternative for reinforcing composites, and, in addition, a more proper destination can be given to this type of residue. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47427.

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“…CSBF have mechanical properties between those of cotton and linen (Reddy and Yang 2009). It has been confirmed that CSBF can be used to reinforce composites such as polyester (PET) (Hassan and Nada 2003), polypropylene (PP) (Cao et al 2011;Hou et al 2014), polyethylene (Habibi et al 2008;Qi et al 2012), or poly(butylene succinate) Qu et al 2011). Bark of cotton stalks is a promising and beneficial renewable resource to produce cellulose fibers at a low cost, with desirable properties and biodegradability (Reddy and Yang 2009;Zhou et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The influence of the moisture content of cotton stalks before steam-explosion and the duration of steaming treatment on the mechanical prosperities of PP composites were investigated by Cao et al (2011). Hou et al (2014), Dong et al (2014), Tan et al (2011), andQu et al (2011) pretreated bark of cotton stalks by steam explosion and the obtained CSBF were used as reinforcing fibers of composites or textile fibers. Ibrahim et al (2010) isolated cellulose from different lignocellulosic biomass sources including cotton stalk, corn cob, banana plant, and cotton gin waste using steam explosion technology followed by alkaline peroxide bleaching.…”

Section: Introductionmentioning

confidence: 99%

Chemical-free Extraction of Cotton Stalk Bark Fibers by Steam Flash Explosion

Hou¹,

Sun²,

Zhang³

et al. 2014

BioResources

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Cotton stalk bark fibers (CSBF) were extracted by steam flash explosion, completed within 0.09 s, and the extracted fibers were compared with those obtained by conventional alkaline treatment. Results indicate that the optimum steam pressure was 2.5 MPa when steaming time was set to 2 min for extracting CSBF. Under the optimized conditions, the obtained CSBF had a cellulose content of 72%, length of 48 mm, fineness of 45 dtex, crystallinity index of 68, moisture regain of 8%, water retention of 98%, and tensile strength of 2.4 cN/dtex, which were similar to results obtained by conventional alkaline treatment. Compared with bark of cotton stalks, CSBF had lower moisture regain and water retention, and higher onset decomposition temperature. The results show that moderate steam flash explosion is a chemical-free, quick, and effective method for exploring the industrial applications of bark of cotton stalks as natural cellulose fibers.

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Preparation of lightweight polypropylene composites reinforced by cotton stalk fibers from combined steam flash-explosion and alkaline treatment

Cited by 48 publications

References 37 publications

Preparation and Properties of Oriented Cotton Stalk Board with Konjac Glucomannan-Chitosan-Polyvinyl Alcohol Blend Adhesive

Preparation and Properties of Oriented Cotton Stalk Board with Konjac Glucomannan-Chitosan-Polyvinyl Alcohol Blend Adhesive

Grape stalk fibers as reinforcing filler for polymer composites with a polystyrene matrix

Chemical-free Extraction of Cotton Stalk Bark Fibers by Steam Flash Explosion

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