Effects of Soybean Oil Modified Cellulose Fibril and Organosilane Modified Cellulose Fibril on Crystallization of Polypropylene

Abstract

Soybean oil modified cellulose fibril (Oil-g-CF) and organosilane modified cellulose fibril (Silane-g-CF) were prepared using maleinized soybean oil and hexadecyltrimethoxysilane, respectively. Thus obtained modified cellulose fibril was added to polypropylene by a simple melt mixing on a hotplate. PP/modified CF composites with 4.0 wt% filler content were prepared. The composites were subject to a polarized optical microscope to investigate particle dispersion, supramolecular morphology, and crystallization behavior. It was found that Silane-g-CF exhibited smaller particle sizes with better particle distribution when compared to Oil-g-CF. In addition, the etched composite samples unveiled an increase in a number of spherulite crystals as well as a decrease in the spherulite size. The nonisothermal crystallization study of composites revealed that both Oil-g-CF and Silane-g-CF were capable of nucleating PP by facilitating faster crystallization process and raising the number of spherulites. The DSC results indicated that Silane-g-CF was able to perform a more effective nucleation than Oil-g-CF, judged by a higher crystallization temperature. Moreover, PP composites containing Oil-g-CF and Silane-g-CF had higher crystallinity by 7% and 10%, for the first and the latter, respectively, when compared to neat PP.

Properties of Poly(Lactic Acid) Filled with Hydrophobic Cellulose/SiO2 Composites

“…As a result, cellulose (CS)/SiO 2 nanocomposite was obtained. Then, hexadecyltrimethoxysilane emulsion (HDTMS/EO15/CH 3 OH/H 2 O) was added with vigorous homogenization [16]. To study the effect of degree of surface modification, two ratios of cellulose to HDTMS wt ratio of 1 : 0.25 and 1 : 1 were prepared.…”

Characterization of Several Microcrystalline Cellulose (MCC)-Based Agricultural Wastes via X-Ray Diffraction Method

“…Microcrystalline cellulose (MCC) that extracted from natural fiber is used in many applications such as pharmaceuticals, food, cosmetic, and polymer composites industries due to its non-toxicity, biocompatibility, hydrophilicity, biodegradability, crystallinity, and renewability properties [1]. MCC is generally known as an organic constituent in nature, which acquired from hydrolysis of cellulose that comprises of a linear homopolysaccharide of β-(1-4) linked anhydro-Dglucose units [2] and found to be odorless and crystalline in a form of powder. MCC is a naturally occurring substance derived from purified and partially depolymerized cellulose and exhibit variations according to its origin sources of the raw material and the types of extraction process.…”