Copolymerization of methyl methacrylate with lauryl methacrylate using group transfer polymerization

Sannigrahi, Biswajit; Wadgaonkar, Prakash P.; Sehra, Jagadish C.; Sivaram, Swaminathan

doi:10.1002/(sici)1099-0518(19970730)35:10<1999::aid-pola15>3.0.co;2-c

Cited by 26 publications

(8 citation statements)

References 5 publications

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“…Of the three monomers, MMA, LMA, and GMA⊥DDA (that are copolymerized with the molar ratio of 10:1:4), the latter two have apparently longer alkoxyl groups than MMA and should possess lower copolymerization tendencies with MMA. This size effect has been identified in several previous studies on the free-radical copolymerization of MMA ( r 1 1.38) with LMA ( r 2 0.68) . On the contrary, LMA and GMA⊥DDA are structurally analogous, and hence, the copolymer segments formed by them have a homogeneous composition.…”

Section: Resultssupporting

confidence: 52%

Formation of Icephobic Surface with Micron-Scaled Hydrophobic Heterogeneity on Polyurethane Aerospace Coating

Tay

Hong

2018

ACS Appl. Mater. Interfaces

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Development of an anti-icing surface on a desired industrial coating patch/object has been the persistent challenge to several industries, such as aviation and wind power. For this aim, performing surface modification to implement the icephobic property on existing commercial coatings is important for practical applications. This work accomplishes an icephobic coating overlying a PPG aerospace polyurethane coating. It manifests a clear capability to delay the formation of frost as well as to reduce the adhesion strength of ice. This icephobic coating is sustained by a unique hydrophobic heterogeneity in the micron-scale of segregation, which is realized through solution casting of a specific copolymer consisting of random rigid and soft segments, namely poly(methyl methacrylate) and poly(lauryl methacrylate-2-hydroxy-3-(1-amino dodecyl)propyl methacrylate), respectively. A wrinkled pattern developed over the coating is observed because of the diverse traits between these two segments. Besides, the OH/NH groups of the soft segment are crosslinked by a diisocyanate monomer upon drying and curing to strengthen the coating. More importantly, integration of a small dose of paraffin wax into the copolymer induces a spread of soft microdomains on the winkled pattern surface. It is hypothesized that these dual heterogeneous assemblies are responsible for the icephobicity since they instigate distinct interactions with condensed water droplets. Lastly, the thermoelectric cooling (Peltier effect) and the adhesion strength of ice on the typical coatings were assessed. This investigation also includes examination on the icephobic durability of coating, which is enhanced when a small amount of polyethylene oligomer is incorporated into the coating.

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Section: Resultssupporting

confidence: 52%

Formation of Icephobic Surface with Micron-Scaled Hydrophobic Heterogeneity on Polyurethane Aerospace Coating

Tay

Hong

2018

ACS Appl. Mater. Interfaces

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“…The appearance of a glass transition process implies the existence of critical size regions in which cooperative motions occur and thus the corresponding relaxation 24. Sannigrahi et al12 studied the syntheses of random and block copolymers from MMA and LMA. It was demonstrated that, when the monomers mixed before the beginning of the copolymerization a random copolymer was formed.…”

Section: Discussionmentioning

confidence: 99%

“…Sogah et al11 demonstrated the synthesis of random copolymers of MMA with butyl methacrylate and of butyl methacrylate with glycidyl methacrylate, as well as block copolymers of MMA with butyl methacrylate, 2‐ethylhexyl methacrylate, and LMA. Copolymers of MMA with higher alkyl methacrylates, such as LMA exhibited properties that are related to its comb‐like structures 12. The polymerization, the chemical and mechanical characterization, and the feasibility of the injection was evaluated.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of polymeric implant for kyphoplasty

2008

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Copolymers of methyl methacrylate (MMA) and lauryl methacrylate (LMA) were prepared to obtain injectable ductile materials to be used in restoring vertebra height in kyphoplasty. Copolymers with M(w) in the range of 130,000 and polydispersity of 1.8 were obtained. Several aspects of the effect of adding LMA monomers were examined including intrinsic viscosity, thermal properties, mechanical properties, and the ability to be injected under high pressure. By increasing the amount of LMA, the ductility of the polymer was increased, accompanied by a decrease in Young's modulus and strength. The copolymer with monomers ratio (MMA:LMA) 1:1 v/v possessed the most suitable mechanical properties and injectability, which may have potential clinical use in orthopedics.

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“…With the successful development of ligated anionic polymerization, it is possible to polymerize alkyl methacrylates in a controlled manner 7–17. However, controlled anionic polymerization of higher alkyl methacrylates has received relatively less attention.…”

Section: Introductionmentioning

confidence: 99%

“…The obtained polymers had molecular weights of about 6500 with a narrow MWD (≤ 1.14). Later, Sannigrahi and coworkers8 reported using GTP to prepare diblock copolymers of MMA and LMA whose molecular weight was about 40,000 with a narrow MWD (≤ 1.15). Although the GTP method provides controlled polymerization of alkyl (meth)acrylates at ambient temperature, molecular weight control is lost when higher molecular weights ( M n > 50,000) are targeted.…”

Section: Introductionmentioning

confidence: 99%

Interpolymer associations between poly(vinyl alcohol) and poly(diallyldimethylammonium chloride) in aqueous dilute solution

Mbareck

Métayer

Labbé

2002

J of Applied Polymer Sci

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This article studied the compatibility of poly-(vinyl alcohol) (PVA) with poly(diallyldimethylammonium chloride) (PDADMACl) in a dilute aqueous solution. At a total mixture concentration and a constant molecular weight of PDADMACl, it was found that interpolymer associations increase with the molecular weight and decrease with the degree of hydrolysis of the PVA sample (87-89 and 98 -99%). From these results, it can be deduced that the compatibility of PVA and PDADMACl is due to specific intermolecular interactions that could be assigned mainly to electrostatic interactions between hydroxyl groups within PVA chains and ion atoms within PDADMACl.

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Copolymerization of methyl methacrylate with lauryl methacrylate using group transfer polymerization

Cited by 26 publications

References 5 publications

Formation of Icephobic Surface with Micron-Scaled Hydrophobic Heterogeneity on Polyurethane Aerospace Coating

Formation of Icephobic Surface with Micron-Scaled Hydrophobic Heterogeneity on Polyurethane Aerospace Coating

Synthesis and characterization of polymeric implant for kyphoplasty

Interpolymer associations between poly(vinyl alcohol) and poly(diallyldimethylammonium chloride) in aqueous dilute solution

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