Investigation of the thermal behavior of 4-vinylpyridine–trimethylolpropane trimethacrylate copolymeric microspheres

Abstract

The study describes the thermal properties of porous microspheres synthesized with functional monomer 4-vinylpyridine (4VP) and crosslinking agent trimethylolpropane trimethacrylate (TRIM). Polymeric 4VP-TRIM microspheres were prepared via seed polymerization, using polystyrene microbeads as a shape template. The resulting 4VP-TRIM microspheres were in the range of 9-12 lm, with specific surface area of about 200 m 2 g -1 . The thermal properties of 4VP-TRIM materials were evaluated by thermogravimetry and differential scanning calorimetry. By TG/FTIR/MS, it was observed that new porous materials exhibited multi-staged decomposition patterns, different from poly(TRIM) microspheres. DSC and TG experiments showed that water molecules were absorbed on the materials' surface. The synthesized 4VP-TRIM microspheres exhibited rather high thermal stability. Their initial decomposition temperature was about 300°C. During the microspheres' decomposition, an evolution of carbon dioxide, water, and carbon monoxide as main gases, as well as of pyridine and aliphatic compounds, was observed. It was confirmed that the evolved pyridine accelerated the degradation of copolymeric network.

Thermal properties of TRIM–GMA copolymers with pendant amine groups

“…In comparison with the commonly used adsorbents based on silica gel, polymers are stable throughout the whole pH range, and they can be easily functionalized and have the ability to create specific sorption spaces. In their structure, they combine the most desirable characteristics of porous materials and polymers and consequently are used as various kinds of sorbents [1][2][3][4][5][6][7][8][9]. In the case of specific sorption processes, sorbents should possess functional groups on their surface.…”

TG/DSC/FTIR/QMS studies on the oxidative decomposition of terpene acrylate homopolymers

“…Thermogravimetry-differential scanning calorimetry coupled with Fourier transform infrared spectroscopy and quadrupole mass spectroscopy (TG/DSC/FTIR/QMS) is an important and often used analysis tool in order to evaluate both thermal stability and the decomposition mechanism of many different structure compounds [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Many researches and engineers applied this analysis method to their studies because it allowed evaluating not only the thermal resistance of the various materials but also the type of the decomposition gaseous products emitted under heating or burning the materials.…”

“…In addition by the analysis of the type of the volatile decomposition products emitted under heating of the materials, it is possible to evaluate the decomposition course and the most probable decomposition mechanism of organic, inorganic and polymeric materials. Such knowledge is basic in many practical applications where the materials are subjected to high temperatures [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Most of the materials which have practical applications are manufactured, utilized and converted under the access of oxygen.…”

“…Meth(acrylate)s are one of the polymer groups which have a wide industrial applications due to their unique properties, among them one can mention their biocompatibility with other polymers, the lack of toxicity, high chemical, hydrolysis, thermal and mechanical resistance. As a result, they are commonly used in many branches of industry as raw materials, components or copolymers in the manufacture of various products using in everyday life [18,20,21]. According to the literature survey, the thermal stability and the decomposition course of many meth(acrylate)s [22][23][24][25][26][27] have been discussed in details.…”

Characterization of thermal properties of porous microspheres bearing pyrrolidone units

“…They are used as effective materials for many separation processes and various kinds of sorbents [1][2][3][4][5][6][7][8][9]. They can be obtained from numerous types of monomers as well as by modification of copolymers that contain reactive groups [10][11][12][13][14][15][16][17][18]. One of the convenient routes to incorporate new functional group into polymer matrix is ring-opening reaction of oxirane ring with required agent.…”