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Synthesis and Properties of Divinylbenzene/styrene Interpennetrating Polymer Networks

Author: ShiGuoDong
Tutor: KouXiaoKang
School: Xi'an University of Architecture and Technology
Course: Materials Processing Engineering
Keywords: Interpenetrating polymer network Pore ??structure Adsorption properties
CLC: O631.3
Type: Master's thesis
Year: 2009
Downloads: 139
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Abstract

Interpenetrating polymer network (IPN) as a new method of blending, much attention has been widely used in the field of development of new polymer materials engineering materials and functional polymer materials modified. In this experiment, the industrial D101 white ball of the first network, prepared according to a certain proportion of styrene (St), divinylbenzene (DVB), a mixed solution of toluene (TOL), and 1.0% benzoyl peroxide (BPO) for the second network, the mixed solution was sufficiently swelled D101 white balls and filtered clean, then the conventional suspension polymerization method, a mixed solution of suspension in the first internal network copolymerization of divinyl benzene (DVB) / styrene (St) macroporous mutual interpenetrating polymer network (DVB / St IPN). Nitrogen adsorption instrument measured the resin pore structure parameters. The experimental results show that: (1) of IPN13 to 16 a specific surface area of ??the sample is much higher than IPN1 ~~ 4 than the surface area of ??the sample, the most important factor is the amount of DVB used in the second network. DVB greater the amount of the second network in the case of other conditions are the same, the corresponding IPN sample ratio, the greater the surface area; second network crosslinking degree IPN sample is also larger than the surface area. (2) in the second network, the degree of crosslinking monomer / TOL under the same conditions, the ratio of the IPN sample surface area, with the decrease in the amount of absorption of the first network, and gradually decreases. (3) in the absorption amount of the first network and the monomer / TOL same case, with the increase of the degree of crosslinking of the second network, IPN pore volume gradually becomes large. Chemical methods of dynamic adsorption performance of the synthetic resin of phenol. The experimental results show that: (1) of TOL / monomer = 2/1, saturated interpenetrating With the improvement of the degree of crosslinking of the second network, the the IPN sample suction phenol amount of growth trend is very significant. In the first network is not saturated when the interpenetrating network second variation of the degree of crosslinking is no longer significant impact on the the IPN suction amount of phenol. Further, in TOL / monomer = 4/1, saturated IPN IPN of phenolic absorption amount but not a similar phenomenon occurs. This shows the degree of crosslinking of the second network is not affected the IPN sample phenol uptake change only factor, but also consider the swelling factor and the first network uptake and other factors. (2) increases in the second network, the degree of crosslinking and its tol / monomer = 4/1 is fixed, with the increase of the first network uptake, suck phenolic content of the IPN sample first reduced. Fixed, second network TOL / monomer = 2/1, with the increase of absorption amount of the first network, IPN samples phenol absorption amount gradually increases in the second network, the degree of crosslinking.

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