In Narimissa and Wagner [3,4] we extended the HMMSF model to monodisperse, bidisperse, and polydisperse
linear polymer melts by means of relating the relaxation times to the Rouse stretch-relaxation times for each relaxation mode.
It is known that a Lissajous plot showing secondary loops is indicative of a
linear polymer architecture, while the absence of secondary loops is characteristic of a branched polymer architecture (ref.
Although the molecular weight of star-shaped polymers is much higher than that of the others, the injection pressure is similar to that of M0-4000
linear polymer, and the injection ability is good.
The multivalent
linear polymer precursor poly(HPMA-co-Ma-ah-NHN[H.sub.2]) (P4) containing hydrazide groups randomly distributed along the polymer chain, which are intended for drug attachment, was prepared by free radical copolymerization using AIBN as the initiator, as previously described [10].
This approach is familiar for
linear polymer chains and is generalized here to branched polymers.
Linear low density polyethylene refers to a
linear polymer containing several short branches and formed by the copolymerization of ethylene.
Polyrotaxanes consist of a
linear polymer threaded through a series of unattached cyclic molecules.
In a recent Canadian case involving polyethylene polymers, the judge had to construe the following terms: "ethylene polymer composition," "comprising," "homogenously branched," "heterogeneously branched," "linear," "substantially linear," "slope of strain hardening coefficient" and "
linear polymer fraction." While such terms may be well known to polymer chemists, these are not your average everyday phrases.
For example, in works [11,12] thermal degradation of high-molecular
linear polymer (on the example of polyethylene) is considered.
The molar weight distribution of the
linear polymer samples was investigated by the gel permeation chromatography (GPC) with N,N'-dimethylformamide as the solvent.
Even though polydimethylsiloxane is a
linear polymer, just as is this polystyrene standard, the molar masses at the same elution time are not identical for the two polymers.