Juniper Publishers Journal of Polymer science

  Academic Journal of Polymer Science - Juniper Publishers                                                                     Abstract Membrane technology offers a wide range of applications and advantages in many fields. On the other hand, PEEK-WC is widely employed to produce membranes, also after chemical modifications, with different morphologies and different techniques, and for many applications. In this work transparent PEEK-WC membranes were produced, modifying just the preparation conditions. Transparent membranes find a lot of applications, from display protection film, in odontology, as impermeable pellicles, in cultural heritage protection, but also in traditional fields, as gas separation. Not all the membranes are transparent, but it seems clear that the oxygen presence during membrane formation is r...

Abstract This review is devoted to recent progress in the design of anticancer drug delivery systems with participation of unique polysaccharide gellan gum. At first a brief literature survey on conformational and phase behavior of gellan gum as a function of external stimuli, such as temperature, pH, salt addition etc. is presented. Then the immobilization protocol of anticancer drugs and gold nanoparticles within gellan-based hydrogel matrix is discussed. Release of anticancer drugs from gellan gel matrix to outer solution is considered. Cytotoxicity of gellan gum-immobilized gold nanoparticles together with their anticancer activity is summarized. Read more about this article:  https://juniperpublishers.com/ajop/AJOP.MS.ID.555588.php Read more Juniper Publishers Google Scholar articles:  https://scholar.google.com/citations?view_op=view_citation&hl=en&user=WwdhOCwAAAAJ&citation_for_view=WwdhOCwAAAAJ:RGFaLdJalmkC

     JUNIPER PUBLISHERS-   ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract Cationic polymerization of p-methyl styrene by phenacyl triphenyl phosphonium, phenacyl triphenyl arsonium and p, p`-bis[(triphenylphosphonio) methyl benzophenone salts [1-3], and cation radical salt of p-substituted triphenylamine having different p-substilments was carried out photochemically and/or thermally. Cation radical amine salts were found to be more effective thermally in comparison to phosphonium or arsonium salts. The effects of initiator structure, counter ion, concentrations of salts and reaction conditions on the rate of polymerization in dichloromethane on the isolated polymer will be presented Figure 1-3. Keywords:  Phenacyl triphenylphosphonium salts; Phenacyl triphenylparsonium salts; tri p-substituted triphenyl amine salts; p-methyl styrene; photo polymarization; thermal polymarization Introduction Poly (p-methyl styrene), PMS has excellent potential for a broad range of...

   JUNIPER PUBLISHERS-   ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract Studies of the elution dynamics of adsorption have revealed a close correspondence between the analytical solutions to (i) a direct problem formulated using an equilibrium adsorption layer model and (ii) an inverse problem formulated using the method of moments. Keywords:  Elution Dynamics; Adsorption; Charcoal; chromatograph; Numerical Equations Introduction The effects of adsorption dynamics on the elution peak profile for an arbitrary adsorption isotherm were previously analyzed in [1] using numerical simulations based on a model that assumed a layer of equilibrium adsorption (LEA model) [2]. Assuming linear adsorption dynamics, [1] revealed that the elution curves simulated using the LEA model agreed well with experimental data obtained for a given integer unit of relative adsorbent bed length (n). The solution parameters to the inverse problem, formulated using the method of moments for intege...

     JUNIPER PUBLISHERS-   ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract Most of the studies about ion exchange membrane (IEM) have been focused on the analysis of commercial IEM, material engineering on the tailor-made membrane, and system engineering related to the IEM applications. However, the structural engineering of IEM is quite effective to improve drastically IEM properties because the structure can affect the movement and hindrance of ion in the membrane body. It is worth taking this opportunity to recall the need for IEM structural studies. As one idea of structural engineering research, an IEM that simulates the concrete structure of a building can be very effective to overcome the limitation of conventional IEMs. Keywords:  Ion exchange membrane; structural engineering; nanofiber; concrete; composite Introduction The role of IEM is quite important in various research or industrial area, but its development has been stagnant in recent years. At this p...

       JUNIPER PUBLISHERS-   ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract The effect of annealing on the creep and recovery properties of β -BOPP film was studied. The creep resistance can be improved obviously by annealing, the modification becomes better with elongating the duration. Four-parameter Burger model and Weibull distribution function well described such cases. Keywords:  BOPP Film; Creep; Fitting; Burger Model; Weibull Distribution Function Introduction Biaxially oriented polypropylene (BOPP) film has become a widely used film material because of its light weight, good transparency, moisture-proof, non-toxic and simple preparation process. When the content of β crystal in BOPP is increased, the toughness and thermal deformation resistance of BOPP film is greatly improved such that its application scope is expanded. However, its internal structure will undergo such complex changes as the movement of chain segments, the unwinding of molecular cha...