The photochemical interaction of aromatic azides with polyvinyl alcohol in solid films

Oleinik, A. V.; Треушников, В. М.; Фролова, Юлия Владимировна

doi:10.1016/0032-3950(75)90467-0

Cited by 4 publications

(26 citation statements)

References 4 publications

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“…Plastic deformation of semicrystalline polymers and the mechanisms involved were a subject of intensive studies in the past decades 2, 6–11. Early studies concentrated mostly on the uniaxial tension.…”

Section: Plastic Deformation Of Semicrystalline Polymersmentioning

confidence: 99%

“…The field is still developing and many new results were obtained in last years 4, 13–32. An excellent reviews were published recently by Oleinik 2, 11. The new results and concepts encouraged to write this report.…”

Section: Introductionmentioning

confidence: 97%

“…Due to complicated, multi‐level hierarchical structure of semicrystalline polymers their plastic deformation appears a complex and multistage process. Therefore, a complete quantitative description of plasticity of semicrystalline polymers requires different approaches at different scale levels of their structure: micro‐, meso‐ and macroscopic,2. At the microscopic level the basic micromechanisms of deformation of crystals and amorphous phase are considered.…”

Section: Introductionmentioning

confidence: 99%

“…The mesoscopic level includes bending, rotations, translations and fragmentation or other structural rearrangements of lamellar stacks or mosaic blocks, deformation of spherulites, formation and multiplication of shear bands, etc. A physical interpretation of the results obtained in the macroscopic experiment (stress‐strain‐strain rate) is actually impossible without considering other deformation levels of smaller scale 2…”

Section: Introductionmentioning

confidence: 99%

“…There is a number of very good published reviews on the deformation of semicrystalline polymers, see e.g.,2, 6–12 yet a clear and consistent description is still quite far away. The field is still developing and many new results were obtained in last years 4, 13–32.…”

Section: Introductionmentioning

confidence: 99%

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Plasticity of Semicrystalline Polymers

Bartczak

Gałęski

2010

Macromolecular Symposia

116

106

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Semi-crystalline polymers can be deformed up to a very high strain. The deformation process involves frequently a complete molecular rearrangement of the chain-folded lamellar morphology into a more or less chain-unfolded fibrillar microstructure. This transformation is likely to occur through an intermediate state of high molecular disorder at a local scale. It led to the formulation of a concept of strain-induced melting-recrystallization process as a main mechanism of the structure transformation. In contrast, several structural features occurring at moderate plastic strains are relevant to strictly crystallographic processes. The plastic deformation process of semicrystalline polymers and the micromechanisms involved are discussed. A critical discussion of experimental findings is made to point out the strength or the deficiency of the various argumentations. It is demonstrated that the crystallographic slip mechanisms, including slips: transverse and along the chains are the basic deformation mechanisms in the deformation sequence, active at all strain levels. Direct microscopic evidence of chain slip activity even at well advanced stages of the deformation process is presented. In contrary, the meltingrecrystallization seems to be restricted to the high-strain stage accompanied by chain unfolding and perhaps limited to only a small fraction of the crystalline phase. In addition the experimental results demonstrates clearly that the cavitation, necessary in the Peterlin's model, is really unessential in producing high deformation and appearance of the final highly oriented structure. This can be effectively accomplished with only crystallographic mechanisms employed. A very important role in the deformation sequence is played by the partially reversible shear deformation of amorphous interlamellar layers, producing not only high orientation of amorphous component but also influencing deeply the deformation of crystalline phase, since both phases are strongly connected and must deform simultaneously and consistently.

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Section: Plastic Deformation Of Semicrystalline Polymersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Plasticity of Semicrystalline Polymers

Bartczak

Gałęski

2010

Macromolecular Symposia

116

106

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The effect of the structure of the polymeric matrix on the mobility of nitrenes

Треушников

Frolova

Pomerantseva

et al. 1978

Polymer Science U.S.S.R.

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Zein−Poly(N-isopropylacrylamide) Conjugates

Bromberg

1997

J. Phys. Chem. B

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Stable cross-linked gels were synthesized by polymerization of N-isopropylacrylamide (NIPA) blended with a seed protein (zein) and 4,4′-diazido-2,2′-stilbenedisulfonic acid (DAS) in dimethyl sulfoxide following irradiation. Grafting of DAS-zein chains on polyNIPA backbone was proposed. The gels were shown to undergo discontinuous volume transition at around 32 °C corresponding to lower critical solution temperature of NIPA. The gel swelling was pH-sensitive. Sharp maximum on viscosity vs temperature plots was observed in suspensions of the gel particles at 32 °C due to interparticle network formation caused by hydrophobic interactions between polyNIPA domains.

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The photochemical interaction of aromatic azides with polyvinyl alcohol in solid films

Cited by 4 publications

References 4 publications

Plasticity of Semicrystalline Polymers

Plasticity of Semicrystalline Polymers

The effect of the structure of the polymeric matrix on the mobility of nitrenes

Zein−Poly(N-isopropylacrylamide) Conjugates

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