Torsional Linearity in Nonlinear Stress-Optical Regimes for Polymeric Materials. A spider may use a leg hooked around the dragline to pull it out of the spinneret during web building, or to act as a brake against the weight of the spider during a controlled descent. Richard Kotek, ... Mesbah Najafi, in Polyolefin Fibres (Second Edition), 2017. Giovanni Ianniruberto, Antonio Brasiello. 4.1.15 is a comparison of a birefringence image and Raman peak shift mapping observed in the same area of p-layer grown homoepitaxially on Ib type diamond. Jul-Aug 1961;65A(4):283-288. doi: 10.6028/jres.065A.033. 1. William Shieh, Ivan Djordjevic, in OFDM for Optical Communications, 2010. Synthesis of high refractive index and low-birefringence acrylate polymers with a tetraphenylethane skeleton in the side chain. PDF | On Jan 1, 1995, Kunihiro Osaki and others published Dynamic Birefringence of Amorphous Polymers (FUNDAMENTAL MATERIAL PROPERTIES-Molecular Rheology) | … In lieu of an abstract, this is the article's first page. Probe rotation near and below the glass transition temperature: Relationship to viscoelasticity and physical aging. Nonlinear Mechano-Optical Behavior and Strain-Induced Structural Changes of l-Valine-Based Poly(ester urea)s. Direct Comparison of Probe Reorientation and Linear Mechanical Measurements of Segmental Dynamics in Glassy Poly(methyl methacrylate). Dynamical rigidity of cellulose derivatives in melts. Photoviscoelastic behavior of amorphous polymers during transition from the glassy to rubbery state. Thermal birefringence in freely quenched multilayered slabs of amorphous polymers: Experiment and simulation. Yumi Matsumiya, Hiroshi Watanabe, , Yuichi Masubuchi, , Qian Huang. Fig. when qw = 2 according to eq. Hossain, Michael Monteiro, Dimitris Vlassopoulos. Dynamic birefringence of oligostyrene: A symptom of ?polymeric? In what follows, we set k ≡ 1, which can always be achieved by obvious rescaling. Dynamic dilution exponent in monodisperse entangled polymer solutions. This article is cited by Several different types of resonance between the internal vibrations of the vector soliton and the periodic modulation of the birefringence are possible. Molecular Structure, Chain Dimensions, and Linear Rheology of Poly(4-vinylbiphenyl). Find more information about Crossref citation counts. This second piece of polarizing material is known as the analyzer. On drawing, two types of microstructural change occur: Ordered regions — in particular NPL crystals, but also polyalanine crystallites — are degraded, so that birefringence increases. Revisit the Stress-Optical Rule for Entangled Flexible Chains: Overshoot of Stress, Segmental Orientation, and Chain Stretch on Start-up of Flow. Your Mendeley pairing has expired. Viscoelastic properties and birefringence of phenolic resins. Eiko Tamura, Takuji Kume, Shigeru Okamoto, Tadashi Inoue. New Applications of an Old Theory - the Rouse Theory - in Polymer Dynamics and Viscoelasticity. On the other hand, the observation area is limited compared with XRT image because an object lens of high power is necessary for the single dislocation analysis. Figure 3.29. The process may be facilitated by various means. It is quite easy to fabricate a bimodal optical fiber with periodically modulated birefringence, which gives rise to a model with a group-velocity difference between two polarization modes that changes sign periodically. A birefringence study of polymer crystallization in the process of elongation of films. Journal of Polymer Science Part B: Polymer Physics. Tatsuro Matsuoka, Junki Miyashita, Shinobu Koda. However, polymers often possess some degree of crystalline order and may or may not be optically transparent. The plot in fig. Soichiro Nagase, Koki Miyama, Akikazu Matsumoto. Where Γ is the quantitative retardation of the material, t is the thickness of the birefringent crystal (or material) and B is birefringence as defined above. Measurements on Polymers Containing Five-Membered Ring in Main Chain. A second-order resonance may take place at. 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