The enhancement performances of cotton stalk fiber/PVC composites by sequential two steps modification

Abstract

In the present study, the cotton stalk fiber (CSF) was modified by sequential two steps of alkali and copper ethanolamine (CE) solution treatment. The unmodified and modified CSF/poly(vinyl chloride) (CSF/PVC) composites were prepared. The mechanical and physical performances of the various CSF/PVC composites were studied comparatively. By the modification of CE solution, all the tensile strength, tensile modulus, impact strength, water resistance, and heat distortion temperature of samples were enhanced continuously. The sample with comprehensive properties was obtained using 2% concentration of CE. The composites were also prepared with different CSF content. By increasing the CSF loading, all the tensile strength, elongation at breakage, tensile modulus, and heat distortion temperature of samples were enhanced. The existence of copper on the surface of CSF improved the thermal stability of the CSF/PVC composites. Water retention value, oil retention value, and scanning electron microscope were applied to reveal the components and microscopic change of the composites. The possible reaction mechanism of modification was proposed based on the experimental results and according to the previous literature. This method reported here may provide a new way for the fabrication of CSF/PVC composite in engineering applications.

Synthesis of DOPO‐g‐GPTS modified wood fiber and its effects on the properties of composite phenolic foams

“…Tensile strength is often used to evaluate the modification effect of interfacial compatibility between fiber and polymer matrix. Higher tensile strength of fiber composites indicates the better interfacial compatibility . Tensile strength of PFs was shown in Figure .…”

Direct Electrospinning of Cellulose Acetate onto Polyurethane Sheet and Effect of Its Saponification on Mechanical Properties

“…Cellulosic materials, cellulose nanofiber (CNF) (Yano et al, 2005;Ito, 2013;Kakroodi et al, 2014;Wang et al, 2014), and other cellulosics including cellulose derivatives (Sugimura et al, 2013;Lee et al, 2014;Sugimura et al 2015;Li et al, 2018) have drawn much attention as a filler for plastics (Sakakibara et al, 2017), because they have much higher specific elastic modulus than steel (Nogi et al, 2009;Orts et al, 2005). In general, CNF has cellulose I crystalline polymorph.…”

Potential use of waste cotton in production of biomass composites

“…Statistics show that annual global textile waste is more than 30 million tons, which mainly includes scraps generated by chemical action and mechanical action in the textile process: waste yarn, yarn return, and scrap produced during the cutting process in textile production, as well as discarded textile fibers and their products that are produced in the lives and activities of residents (Mishra et al 2014). Most textile waste materials are directly incinerated or buried, and only a minimal portion is recycled into waste resources (Li et al 2017). Consumers discard approximately 5.8 million tonnes of textiles every year in the European Union.…”