Development of a plasticizer-poly(methyl methacrylate
The objective of this paper is to (a) investigate the effect of plasticizer on the PMMA sensitivity for hydrocarbons; (b) elucidate the plasticizer-polymer response mechanism; (c) identify suitable plasticizers for discriminating between various hydrocarbon analytes that exhibit similar chemical properties, and (d) determine if any relationship
Influence of plasticizers on poly(methyl methacrylate
The influence of a polar plasticizer glycerol, and a nonpolar plasticizer, dioctylphthalate (DOP), on the microstructure and relaxation properties of poly (methyl methacrylate) ionomers has been investigated by dynamic mechanical thermal analysis.
Investigation of dibutyl phthalate as plasticizer on poly
PMMA with an average molecular weight of 35,000, was obtained from Acros Organic, lithium tetraborate (Li 2 B 4 O 7), dibutyl phthalate (DBP) was obtained from Aldrich and tetrahyrofuran (THF) was obtained from J.T. Baker.
Using Plasticizers to Control the Hydrocarbon Selectivity
This paper shows for the first time that the selectivity and sensitivity of a poly (methyl methacrylate) (PMMA) based QCM sensor can be significantly enhanced for aromatic hydrocarbons by incorporating a plasticizer into the polymer film.
Application of ionic liquids as plasticizers for poly(methyl
The room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate, [C 4 mim] [PF 6] was found to be an efficient plasticizer for poly (methyl methacrylate), prepared by in situ radical polymerization in the ionic liquid medium; the polymers have physical characteristics comparable with those containing traditional plasticizers
- Are ionic liquids a good plasticizer for poly (methyl methacrylate)?
- Room temperature ionic liquids (ILs) based on imidazolium salts, were found to be excellent plasticizers for poly (methyl methacrylate), with improved thermal stability, and the ability to reduce glass transition temperatures to near 0 °C.
- Why is bulk polymerization of methyl methacrylate dangerous?
- This phenomenon is particularly apparent in the bulk polymerization of methyl methacrylate (MMA) and is highly undesirable in industrial applications, as it may lead to the thermal runaway of the process, thus causing depolymerization and the plugging of equipment. 5, 6, 7
- Is PMMA plasticized with dioctyl phthalate?
- In this work, PMMA was formulated using dioctyl phthalate, DOP, as a traditional plasticizer, and properties were compared to PMMA plasticized with two ILs: butyl methylimidazolium/hexafluorophosphate, [bmim + ] [PF 6− ], and hexyl methylimidazolium/hexafluorophosphate, [hmim + ] [PF 6− ].
- What are the chemical structures of plasticizers?
- The primary chemical structures of plasticizing agents include phthalate esters, adipates, trimellitates, and phosphates . The structure of the widely-used DOP is shown in Fig. 1 as a representative of the general characteristics of many plasticizers.
- What is the tan delta of plasticized PMMA?
- At 95 °C, where the plasticized PMMA is slightly above the glass transition temperature, the tan delta for the plasticized samples is greater than one, with the DOP and [hmim + ] [PF 6−] samples having identical tan deltas. Table 2. Young’s, storage and loss moduli and tan delta for bulk and plasticized PMMA Young’s modulus at 25 °C.
- How to extend the life of plasticized materials?
- For extending the lifetime of plasticized materials, the additive must have a low volatility and not leach from the host. The plasticizer should also provide reproducible control over material properties, by adjusting the chemical structure and quantity of plasticizer used.
