In addition, the induction time increases with increasing molecular weight
in the early stage of crystallization.
However, this assumption is not valid for highly entangled polymers for which the transition between the newtonian behavior and the shear thinning behavior depends on the molecular weight
and on the distribution of the molecular weight
The report provides detailed competitive outlook, which includes the market share and profiles of key players operating in the medium molecular weight
January 1 Low molecular weight
heparin at preventive use faible18.
Leininger and Tian achieved high molecular weights
by heating a polyester to form a melt, and applying and maintaining a vacuum of between 5 mm and 85 mm of mercury to the melt while passing nitrogen gas through the melt until molecular weight
has increased to the desired level.
The intensity ratio near the surface increased with increasing molecular weight
and reduced more significantly owing to the weld-line.
Epolene low molecular weight
polyethylene and polypropylene waxes are based on a proprietary high pressure, free radical technology that directly creates low molecular weight
polyethylene products that perform as internal lubricants/process aids and external mold release agents in various polymeric systems.
Bonded polymers have very low molecular weight
and wider distribution compared to the similar unbounded ones.
Scientists at Purdue University set out to confirm the presence of high molecular weight
plasminogen molecules in milk and to see if other forms are present in milk at even higher molecular weights
The web features a solid matrix including an ultrahigh molecular weight
polyolefin component and a friable, highly dispersing, precipitated silica component.
The influence of molecular weight
distribution and branching on the relaxation behaviour of uncrosslinked natural rubber.
Fractionation technology from Digilab Biovision GmbH, Hanover, Germany, was adopted for the isolation of low molecular weight
peptides (typically <15,000 Da) from human plasma ultrafiltrate.
Specifically, the two partners have confirmed that high-molecular-weight fucoidan in Kjellmaniella crassifolia, which has an average molecular weight
of 200,000, can inhibit the clot formation.
A new family of materials is said to allow production of new types of acrylic or styrenic block copolymers, as well as improved versions of existing copolymers with tighter control of molecular weight
and sequencing of monomer units.
5 cm cubes of orthopedic-grade ultra-high molecular weight
polyethylene that are well suited for measurements of cross-link density by a new ASTM International swell-test method, has been issued.