A Review on Enhanced Productivity Approaches in VCM Suspension Polymerization- Juniper publishers- Open access Journals

Juniper publishers- Academic Journal of Polymer Science

A Novel Empirical Approach to Estimate the Acoustic Properties of Smart Materials: Part I- Open access Journals- Juniper Publishers

Juniper publishers- Academic Journal of Polymer Science

Authored by Francesca Nanni

A Novel Empirical Approach to Estimate the Acoustic Properties of Smart Materials

In this work, a novel empirical approach to the estimation of the rheological behaviour of smart materials from the sound insulation capabilities is proposed. The testing protocol relies on a small sound research facility that was designed with the goal of achieving a movable yet flexible measurement system, suitable for both laboratory environments and quality assurance departments.

Unlike other test protocols relying on lightweight acoustic research solutions, the proposed methodology was developed to perform acoustic tests in a diffused field environment, a test condition much closer to real life applications, and in a sufficiently wide frequency range (eg. 2 -10kHz).

The proposed test methodology was validated by means of modal analysis of the chamber and by comparison between empirical acoustical test results (insertion loss) and the expected theoretical results.

At last, as a proof of concept, it is showed how to apply the proposed protocol to the measurement of the sound insulation of a novel laminate containing a nano composite core and how to evaluate indirectly the rheological behaviour merely from acoustical data.

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Surface Modification and Application of Nanomaterials in Biotechnology- Juniper Publishers- Open access journals

Juniper publishers- Academic Journal of Polymer Science

Authored by Hélio Ribeiro

Surface Modification and Application of Nanomaterials in Biotechnology

In the last years, inorganic nanostructures as carbon nanotubes, graphene, hexagonal boron nitride, and metallic nanoparticles have been applied in several biomedical and nanotechnology fields. These different types of nanomaterials also are awakened as new perspectives in prophylactic, diagnostic and therapeutic areas. However, the uses depends strongly on their chemical and physical surfaces that display an important role in their biocompatibility in different biological systems. A brief study of several types of nanomaterials, their modifications and biomedical application is the main contribution of this short communication.

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Microdroplet Chemistry: Difference of Organic Reactions between Bulk Solution and Aqueous Microdroplets-Open access Journal-Juniper Publishers

Juniper publishers- Academic Journal of Polymer Science

Authored by Inho Nam

Microdroplet Chemistry: Difference of Organic Reactions between Bulk Solution and Aqueous Microdroplets

Recent applications of microdroplet reactions are noted as reaction acceleration in confined environments and possible future scale-up synthesis compare to that of bulk phase reactions. Microdroplet reactions overcome the thermodynamic and kinetic challenges in an aqueous solution. Due to the microdroplet’s distinctive surface environment, the chemistry in Microdroplets significantly differs from that in the bulk solution. Remarkable findings intrigued people in different fields by showing that extremely slow bulk phase reactions can be accelerated dramatically in aqueous microdroplets [1,2]. Not only the rate of the reaction but also the yields of reaction increased due to negative free-energy change which is lower than the value in the bulk phase. Recent experiments have been done by several groups and they validated how microdroplet reactions enable to accelerate organic reactions such as addition reactions [3], condensation reactions [4,5], elimination reactions [2], substitution reactions [2], redox reactions [6], rearrangement reactions [7], and noncovalent complexations [8]. In this mini-review, we show the recent progress about the kinetic and thermodynamic change of organic reactions in aqueous microdroplets, as names as microdroplet chemistry, and its limitation.

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