WebMar 6, 2003 · The chitin whiskers, prepared by acid hydrolysis of chitin from crab shell, consisted of slender parallelepiped rods with an aspect ratio close to 16. After the two aqueous suspensions were mixed and strirred, solid composite films were obtained either by freeze-drying and hot-pressing or by casting and evaporating the preparations. The ... WebAug 21, 2006 · The α-chitin whiskers were prepared from α-chitin flakes from shrimp shells by acid hydrolysis. The as-prepared chitin whiskers exhibited lengths in the range 231–969 nm and widths in the range 12–65 nm, with the average length and width being about 549 and 31 nm, respectively.

Preparation and characterization of α-chitin whisker-reinforced …

WebMar 17, 2010 · Mostly individualized α-chitin nano-whiskers were obtained in yields of 85–90% by partial deacetylation with 33% NaOH at 90 °C for 2–4 h and subsequent … WebJul 30, 2015 · This study evaluated the effects of oral administration of surface-deacetylated chitin nanofibers (SDACNFs) on hypercholesterolemia using an experimental model. All rats were fed a high cholesterol diet with 1% w/w cholesterol and 0.5% w/w cholic acid for 28 days. Rats were divided equally into four groups: the control group was administered … foam extrusion machine

Crab shell chitin whisker reinforced natural rubber …

Weband α-chitin whiskers from shrimp shells of Parape-naeus longirostris, which represents one of the most important commercial decapod crustacean species for Mediterranean trawl fisheries [8], these films were prepared using chitosan and α-chitin whiskers from shrimp shells of Parapenaeus longirostris in the current study. WebJul 17, 2014 · Chitosan whiskers (CsNWs) were obtained by the deacetylation of chitin nanocrystals with 50% NaOH aqueous solution at varying temperatures for different lengths of time ().Following deacetylation, the suspension was diluted with water and centrifuged at 5000 rpm for 10 min, then the supernatant decanted.This process was repeated three … WebNov 1, 2014 · Chitin microfibrils or whiskers with high surface areas and stiffness can be developed as tissue engineering scaffolds, wound dressing, metal ion adsorbent, packaging or edible film, separation membrane, sensor as well as biocomposites with high mechanical properties (Jayakumar et al. 2010; Ifuku and Saimoto 2012; Jin et al. 2013; Ifuku et al. … greenwich town clerk hours