Centrifugation is an important method for producing the concentrated natural rubber latex (NRL) in the current industrial production. The aims of this project are to investigate the change of the components and structure of natural rubber latex in the preparation process of centrifugal concentrated latex production

including the rubber hydrocarbon

protein

lipid

acetone extract (AE)

water extract

ash of NRL by bromination

Kjeldahl determination

extraction

etc; and particle morphology

size

molecular weight (Mw) and crosslinking network of NR by high resolution transmission electron microscope (HRTEM)

Melvin granulometer

gel permeation chromatography (GPC) and nuclear magnetic resonance crosslink density meter. The result of research shown that all of the components and structure didn't change significantly in the process of clarifying and adjusting. While

with the contents of rubber hydrocarbon

lipid and AE

the contents of protein

water extract and ash decreased in the the centrifugating process. Furthermore

M_w and crosslink density both increased. According to the obtained results

the centrifugating is the key process for the components and structure of natural rubber latex in the preparation process of centrifugal concentrated latex production. And the particle morphology

size

Mw and crosslink structure were influenced by the changes of protein and lipid.