Solventless processing of modified poly(vinyl fluoride) and its properties

Stallings, John P.; Paradis, Robert A.

doi:10.1002/app.1970.070140220

Cited by 8 publications

(3 citation statements)

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“…It also presents excellent weather stability and is highly transparent to radiation between the ultraviolet and near-infrared regions [ 67 , 68 ]. However, the low thermal stability of PVF makes it difficult to process by traditional processing methods, and so, plasticizers and stabilizers are usually added [ 69 , 70 ]. The free radical polymerization of VDF results in the partially fluorinated PVDF polymer.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated Polymers as Smart Materials for Advanced Biomedical Applications

et al. 2018

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Fluorinated polymers constitute a unique class of materials that exhibit a combination of suitable properties for a wide range of applications, which mainly arise from their outstanding chemical resistance, thermal stability, low friction coefficients and electrical properties. Furthermore, those presenting stimuli-responsive properties have found widespread industrial and commercial applications, based on their ability to change in a controlled fashion one or more of their physicochemical properties, in response to single or multiple external stimuli such as light, temperature, electrical and magnetic fields, pH and/or biological signals. In particular, some fluorinated polymers have been intensively investigated and applied due to their piezoelectric, pyroelectric and ferroelectric properties in biomedical applications including controlled drug delivery systems, tissue engineering, microfluidic and artificial muscle actuators, among others. This review summarizes the main characteristics, microstructures and biomedical applications of electroactive fluorinated polymers.

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Section: Introductionmentioning

confidence: 99%

Fluorinated Polymers as Smart Materials for Advanced Biomedical Applications

et al. 2018

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“…Products of the Diamond Shamrock Corporation, the DALVOR X-6500 series of resins [6,7] , represented the only kind of PVF that can be easily fabricated by melt-blowing technology, but the feasibility was based on modification of PVF and detailed technical data has never been reported. Therefore, an increase in thermal stability of melt during thermoplastic processing of PVF is an essential aspect, which can positively influence the blowing technology of PVF films.…”

Section: Introductionmentioning

confidence: 99%

Effects of Plasticizers and Stabilizers on Thermal Stability of Polyvinyl Fluoride

Jing

Yuan

2007

Polymer-Plastics Technology and Engineering

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The study was focused on the choosing of plasticizers and stabilizers for improving thermal stability of polyvinyl fluoride (PVF) during the thermoplastic processing. Five kinds of organic esters as plasticizers for PVF were evaluated. The results showed that dimethyl phthalate (DMP) had better compatibility with PVF and phase separation didn't occur up to a relatively high concentration level, and DMP significantly decreased the melting temperature of PVF and showed the good plasticized effect. The optimum DMP content, considering homogeneous compound, good melt fluidity, and dynamic thermal stabilization, can be determined from the melt flow index and torque measurements. Five kinds of additives as stabilizers for PVF/DMP system were evaluated by the color change during static ageing. It was found that pentaerythritol had remarkably positive effects on both thermal and color stability of PVF.

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“…As a result, the melt processing of PVF becomes quite difficult, and the PVF film manufacture has been limited to solvent-extruded method, which requires high boiling point solvents as processing aids. 3 By far, a great deal of researches on the production and properties of PVF films have been carried out, but only Du Pont Co. has PVF film products with the brand of TEDLAR. 4 The difficulties in the film process lead to a limitation in the production and applications of PVF films.…”

Section: Introductionmentioning

confidence: 99%

Influences of molecular weight and particle morphology on film processing properties of polyvinyl fluoride

Wang¹,

Lu²,

Li³

et al. 2006

J of Applied Polymer Sci

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To select a suitable kind of resin for preparing films, the melting point (T m ), thermal decomposition temperature (T d ), and stretch property of polyvinyl fluoride (PVF) as a function of the viscosity-average molecular weight (M Z ) were investigated. The results showed that T d and maximal stretch ratio of extrusion-cast PVF films gradually increase with the increase of M Z . T m also increases when M Z is below 400,000, but keeps invariable when M Z is beyond 400,000. Six different kinds of PVF resin samples in this article were classified into three types, according to their particle morphologies: (1) loose-structured PVF (PVF-A and G); (2) tight-structured PVF (PVF-F); and (3) intermediate-structured PVF (PVF-B, E, and H). The effects of the morphology on the solvent absorbability of PVF were studied. The results indicated that the loose-structured PVF has better absorption capacity to solvent than does tight-structured PVF. The processing temperature can be considerably reduced when N,N-dimethylformamide (DMF) as a plasticizer was mixed with PVF, and the diminished magnitude depends on the absorption capacity of PVF to DMF. The evaporation of DMF is influenced by both molecular weight and particle morphology of PVF, and the final residue of DMF in the PVF/DMF mixture is dependent on the molecular weight of PVF.

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Solventless processing of modified poly(vinyl fluoride) and its properties

Cited by 8 publications

References 0 publications

Fluorinated Polymers as Smart Materials for Advanced Biomedical Applications

Fluorinated Polymers as Smart Materials for Advanced Biomedical Applications

Effects of Plasticizers and Stabilizers on Thermal Stability of Polyvinyl Fluoride

Influences of molecular weight and particle morphology on film processing properties of polyvinyl fluoride

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