Natural Fibers

Natural fibers can be classified according to their origin into animal, vegetable or mineral.

Animal fibers may originate either from the glandular secretions of some insects as in case of silk, in which two fibroin strands are linked by sericin, or follicle bulbs of some animals as in case of wool, which has a molecular structure composed of keratin.

Vegetable fibers have elongated structures, mainly composed of cellulose and usually with round cross-section. They can be classified according to their origin into seed fibers, stem fibers, leaf fibers and fruit fibers.

As compared to the traditional man-made fibers, vegetable fibers present several advantages: abundance, low cost, low density, ability to absorb carbon dioxide from the environment, renewability and biodegradability.
In contrast, its main disadvantages are the high moisture absorption, low resistance to micro-organisms, low thermal stability and mechanical properties lower than those of man-made fibers.

Mineral fibers have their origin in the rocks with fibrous structure and are composed, essentially, of silicates. An example of a mineral fiber is asbestos.

Fibras Naturais

Natural Fibers

The natural fibers can be of animal, vegetable or mineral origin. In recent years there has been a renewed interest in natural fibers considering the issues related to the sustainability of the planet.

View more

Non-Natural Fibers

The non-natural fibers have been developed with the aim of improving various properties such as mechanical efficiency, thermal stability and electrical conductivity, to natural fibers.

View more

fibras inorgânicas

Inorganic Fibers

Inorganic fibers, also sometimes called high performance fibers or super-fibers, have characteristics and properties that differ from other man-made fibers.

View more

fibras funcionais

Functional Fibers

Functional fibers are fibers which perform a specific function, may be defined as being unique, in that each is able to respond to a given situation.

View more


Nanosciences and nanotechnology led to the nanofibers and is currently the main focus of research, development and innovation, where investments have been significant.

View more

fibras multicomponentes

Multicomponent Fibers

It is hoped that in the future, the possibility of combining the properties of the base polymer, the bicomponent fibers are assumed to be engineered materials in areas as diverse as medicine, architecture, agriculture and even fashion.

View more