Improvement of the storage stability and photostability of colored latex prepared by miniemulsion polymerization

Takasu, Mayuko; Shiroya, Toshifumi; Takeshita, Kimiya; Sakamoto, Munehiro; Kawaguchi, Haruma

doi:10.1007/s00396-003-1008-9

Cited by 40 publications

(17 citation statements)

References 10 publications

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“…[7][8][9] Therefore, the miniemulsion polymerization method has been the most frequently used in the microencapsulation of the organic or inorganic particles among several heterogeneous polymerizations since the locus of the polymerization is confined inside the monomer swollen micelles. For instance, Takasu et al 10 encapsulated copper phthalocyanine dye and styryl dye by polystyrene using miniemulsion polymerization to obtain colored latex particles. Antonietti et al 11 also performed the miniemulsion polymerization to prepare the completely polymer-encapsulated carbon black.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of carbon black by oleic acid for miniemulsion polymerization of styrene

et al. 2010

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To carry out miniemulsion polymerization of styrene in the presence of carbon black, carbon black was hydroxylated using potassium permanganate with the aid of a phase transfer catalyst, tetrabutyl ammonium bromide (TBABr). The hydroxylated carbon black was further reacted with oleic acid. The surface modification of carbon black with oleic acid was confirmed by FTIR, XPS, and TEM. The oleic acid-coated carbon black was successfully microencapsulated by polystyrene using miniemulsion polymerization. Polymerization failed when pristine carbon black was used. However, satisfactory conversion (> 96%) was achieved using the oleic acidmodified carbon black. The existence of a polystyrene layer was confirmed by TEM. In contrast the pristine carbon black, the oleic acid-coated carbon black did not act as a radical scavenger during polymerization.

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Section: Introductionmentioning

confidence: 99%

Surface modification of carbon black by oleic acid for miniemulsion polymerization of styrene

et al. 2010

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“…Basically, the stability of a miniemulsion system is controlled by the hydrophobe, which acts as an osmotic agent stabilizing the system against Ostwald ripening, and by the surfactants which suppress the coalescence of the droplets. The stabilization of the nanoparticles formed is dependent on a combination of the effects due to the presence of surfactants and an osmotic pressure agent [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The homogenization of miniemulsion nanoparticles is strongly dependent on the energy transferred to the reaction medium according to the preparation technique used.…”

Section: Miniemulsion Polymerization Of Biodegradable Latexesmentioning

confidence: 99%

Surfactant Effect in Miniemulsion Polymerization for Biodegradable Latexes

Soldi¹,

Zanetti-Ramos²,

Minatti³

2010

Miniemulsion Polymerization Technology

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“…For example, Takasu et al incorporated copper phthalocyanine and styryl dyes into polystyrene latex particles using miniemulsion polymerization. [13,14] Wu and coworkers encapsulated Sudan Black B by miniemulsion polymerization of styrene, [15] and the colored latexes were also prepared by encapsulation of hydrophilic dyes using a delicate double miniemulsion polymerization. [16] However, because of the poor compatibility and the weak non-covalent interaction between the dye and the polymer matrix, the dye migration from the latex particle or even phase separation is inevitable, leading to unsatisfactory migration fastness and light fastness.…”

Section: Introductionmentioning

confidence: 99%

Preparation of covalently colored polymer latex through miniemulsion polymerization based on a polymerizable dye

Wang

Jin

et al. 2015

Designed Monomers and Polymers

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A polymerizable red dye 1-(6-acrylamidohexylamino) anthraquinone (AHAQ) was synthesized and used to prepare colored polymer latexes using styrene and butyl acrylate as main monomers. Influences of the initiator and surfactant amounts, oil/aqueous phase ratio, and AHAQ content on the polymerization process, the particle size, and surface tension of the resulted latex were investigated, and the migration resistance and light fastness of the red latex films were determined. Results showed that the polymerization was carried out smoothly, and the miniemulsion polymerization mechanism was confirmed by monitoring the dimensions of oil phase before and after polymerization. The latex particle size can be adjusted by varying the surfactant amount, and when AHAQ content was 0.2-1 wt% of total monomers, the encapsulation efficiency and dye conversion could be achieved to 98.7 and 96.3%, respectively. The UV-vis spectra of AHAQ and its corresponding covalently colored polymer indicated that the maximum absorption peak was the same, meaning that the chemical structure of chromophore in AHAQ maintains unchanged after undergoing polymerization. The migration resistance and light fastness of the covalently colored latex films were much better than that of the correspondingly non-covalently colored ones.

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Improvement of the storage stability and photostability of colored latex prepared by miniemulsion polymerization

Cited by 40 publications

References 10 publications

Surface modification of carbon black by oleic acid for miniemulsion polymerization of styrene

Surface modification of carbon black by oleic acid for miniemulsion polymerization of styrene

Surfactant Effect in Miniemulsion Polymerization for Biodegradable Latexes

Preparation of covalently colored polymer latex through miniemulsion polymerization based on a polymerizable dye

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