On V-r-invexity and vector variational-like inequalities

Mishra, Shashi Kant; Laha, Vivek

doi:10.2298/fil1205065m

Cited by 18 publications

(8 citation statements)

References 20 publications

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“…Vivek Laha laha.vivek333@gmail.com [5][6][7][8], the nonsmooth case [9][10][11][12] and the recent results [13][14][15] for motivations and references.…”

Section: Introductionmentioning

confidence: 99%

On minty variational principle for nonsmooth vector optimization problems with approximate convexity

Mishra

Laha

2015

Optim Lett

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“…Vivek Laha laha.vivek333@gmail.com [5][6][7][8], the nonsmooth case [9][10][11][12] and the recent results [13][14][15] for motivations and references.…”

Section: Introductionmentioning

confidence: 99%

On minty variational principle for nonsmooth vector optimization problems with approximate convexity

Mishra

Laha

2015

Optim Lett

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“…INTRODUCTION Free radical polymerization is one of the most widely employed polymerization techniques which have been successfully applied in the preparation of paints, high molecular weight poly(methyl methacrylate) for safety glass (Plexiglas V R ), and foamed poly (styrene). 1 The conventional approaches for initiating radical polymerization reactions involve thermal decomposition of azo-compounds (e.g., dialkyldiazenes, AIBN), peroxides (e.g., diaroyl peroxides), organometallic compounds (e.g., trialkyltin hydride) etc. However, requirement of higher reaction temperatures is one of the main obstacles associated with these processes.…”

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confidence: 99%

Light‐induced controlled free radical polymerization of methacrylates using iron‐based photocatalyst in visible light

Bansal

Kumar

Sharma

et al. 2015

J. Polym. Sci., Part A: Polym. Chem.

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A novel visible light mediated catalytic system based on low cost iron complex, that is, Fe(bpy)3(PF)6 photocatalyst that initiates and control the free radical polymerization of methacrylates using ethyl α‐bromoisobutyrate (EBriB) as an initiator and 20 watt LED as light source is developed. The polymerization is initiated with turning the light on and immediately terminated by turning the light off. In addition, the molecular weight of polymer can be varied by changing the ratio of monomer and initiator. The merits of the present methodology lie in the use of low cost less precious, highly abundant iron‐based photocatalyst, avoidance of sacrificial donor and need of lower catalyst amount under visible light. The optimum amount of catalyst and initiator were established and successful polymerization of various methacrylates was achieved under the optimized polymerization conditions. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 2739–2746

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“…19,20 RAFT reagents such as thiocarbonylthio compounds are commonly used. 3,21,22 In the study reported here, RAFT miniemulsion polymerization of styrene (ST) using dibenzyl trithiocarbonate (DBTTC) 23 -25 as RAFT reagent was investigated. Furthermore, the extremely hydrophobic DBTTC was used as costabilizer in this colloidal system and, thus, no additional costabilizer was needed in retarding Ostwald ripening.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of reversible addition–fragmentation transfer (RAFT) miniemulsion polymerization of styrene using dibenzyl trithiocarbonate asRAFTreagent and costabilizer

Kusuma

Lin

Chern

2015

Polymer International

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The roles of dibenzyl trithiocarbonate (DBTTC) as both costabilizer and reversible addition–fragmentation transfer (RAFT) reagent in RAFT miniemulsion polymerizations of styrene were investigated. The effectiveness of DBTTC costabilizer in retarding Ostwald ripening involved in the storage stability of miniemulsion is comparable to that of conventional low‐molecular‐weight costabilizers such as cetyl alcohol, but inferior to that of hexadecane. The major variables chosen for studying kinetics of RAFT miniemulsion polymerizations include the type of initiators and levels of DBTTC and surfactant. At a constant level of DBTTC, the rate of polymerization for benzoyl peroxide (BPO)‐initiated polymerization is slower than that for sodium persulfate (SPS)‐initiated polymerization. Furthermore, the polymerization rate decreases with increasing level of DBTTC for polymerizations initiated by BPO (or SPS). It is the monomer droplet nucleation that governs BPO‐initiated polymerizations. In contrast, for SPS‐initiated polymerizations, the probability for homogeneous nucleation to take place is greatly increased, especially for polymerizations with lower levels of DBTTC and higher levels of surfactant. © 2015 Society of Chemical Industry

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On V-r-invexity and vector variational-like inequalities

Cited by 18 publications

References 20 publications

On minty variational principle for nonsmooth vector optimization problems with approximate convexity

On minty variational principle for nonsmooth vector optimization problems with approximate convexity

Light‐induced controlled free radical polymerization of methacrylates using iron‐based photocatalyst in visible light

Kinetics of reversible addition–fragmentation transfer (RAFT) miniemulsion polymerization of styrene using dibenzyl trithiocarbonate asRAFTreagent and costabilizer

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