Cellulose microfibril structure: inspirations from plant diversity

The Size of the Cellulose Microfibril

Recently the lateral width of the cellulose microfibril has been estimated as 30 A rather than about 150 to 200 A, by extrapolation of data from model shadowing experiments. The difference was attributed to a layer of metal deposited during shadowing. However, direct photographs of the same microfibrils parallel and perpendicular to the direction of shadowing, of unshadowed portions of microfib...

Cellulose Microfibril/Nanofibril and Its Nanocompsites

Cellulose micro/nanofibril (CMNF) as a reinforcing material for composites is becoming more and more attractive to researchers in composite science because of its potential lightweight and high strength. CMNF is generally prepared by either physical treatment, e.g., by a high pressure homogenizer and/or high pressure refiner, or chemical treatments, e.g., acid hydrolysis. In this study, attempt...

Cellulose Microfibril Angle in Wood and Its Dynamic Mechanical Significance

Microbial diversity of cellulose hydrolysis.

Enzymatic hydrolysis of cellulose by microorganisms is a key step in the global carbon cycle. Despite its abundance only a small percentage of microorganisms can degrade cellulose, probably because it is present in recalcitrant cell walls. There are at least five distinct mechanisms used by different microorganisms to degrade cellulose all of which involve cellulases. Cellulolytic organisms and...

Plant Species Diversity in Gonabad

Gonabad located at Khorasan Razavi and coordinates 580 30’ N 34o 35’ E. The highest point of the zone belongs to Peak of Siah Mountain (height of 2,863 meters above sea level) and the lowest place has height of 810 meters above sea level, which is located in North West in salt desert. The mean temperature of the warmest and coldest of year is 29.3 and 3.9 respectively. Mor...