Synthesis of crosslinked poly(methacrylic acid) shell/lipid core colloidal nanoparticles via L-in-Lm interfacial polymerization and their pH responsiveness

Viriyakitpattana, Nopparat; Sunintaboon, Panya

doi:10.1016/j.colsurfa.2020.125180

Cited by 8 publications

(5 citation statements)

References 44 publications

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“…As shown in Table , with the increasing SSS/SiO 2 dose, the average particle size of the polymer microspheres decreased, the absolute value and viscosity of the zeta potential increased, the contact angle of the latex film decreased (as shown in Figure ), − the stability of the latex increased gradually, and the appearance gradually tended to become milky white with blue light (as shown in Figure ).…”

Section: Resultsmentioning

confidence: 90%

Study on the Preparation and Anti-CO₂ Corrosion Performance of Soap-Free Latex for Oil Well Cement

et al. 2020

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To improve the resistance to CO 2 corrosion of oil well cement, soap-free emulsion polymerization was used to prepare a soap-free latex (PSAC) with sodium styrene sulfonate (SSS) and nano-SiO 2 (SSS/SiO 2 ) as the ionic copolymer emulsifier. The effects of SSS/SiO 2 on the performance, thermal stability, and latex particle morphology of the PSAC were investigated through zeta potential, TGA, and TEM measurements, respectively. The carbonation resistance properties of cement with PSAC were evaluated, and the anticorrosion mechanism of the PSAC cement was determined by SEM, EDS, XRD, and 29 Si NMR analyses. The results showed that the PSAC particle size was uniform, the particles were monodispersed, and they had a typical core–shell structure and good heat resistance. The carbonation resistance test results showed that after 60 days of corrosion, the corrosion depth of the cement with 12.0% PSAC content was only 2.16 mm, the permeability was 0.0018 mD, and the decrease in the compressive strength was 6.65%. The porosity in the cement was reduced significantly, and the pore volume (>50 nm) of the cement was reduced by 0.24 times. The PSAC film formation decreased the contact between hydration products and CO 2 . In addition, the nano-SiO 2 in the PSAC reacted with Ca(OH) 2 to reduce the free Ca(OH) 2 content in the cement and generate C–S–H gel with a low Ca/Si ratio and high polymerization, which did not react as readily with CO 2 .

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Section: Resultsmentioning

confidence: 90%

Study on the Preparation and Anti-CO₂ Corrosion Performance of Soap-Free Latex for Oil Well Cement

et al. 2020

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“…Acrylic acid (AA) monomer and cumene hydroperoxide (CHP) initiator were obtained from Aldrich (St. Louis, MO, USA). AA was purified by using a column packed with alumina adsorbent before polymerization [ 24 ]. Tetraethylene pentamine (TEPA) activator was purchased from Acros organics (Geel, Belgium).…”

Section: Methodsmentioning

confidence: 99%

Preparation of Poly(acrylic acid-co-acrylamide)-Grafted Deproteinized Natural Rubber and Its Effect on the Properties of Natural Rubber/Silica Composites

et al. 2022

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This work aims to enhance the polarity of natural rubber by grafting copolymers onto deproteinized natural rubber (DPNR) to improve its compatibility with silica. Poly(acrylic acid-co-acrylamide)-grafted DPNR ((PAA-co-PAM)-DPNR) was successfully prepared by graft copolymerization with acrylic acid and acrylamide in the latex stage, as confirmed by FTIR. The optimum conditions to obtain the highest conversion, grafting efficiency, and grafting percentage were a reaction time of 360 min, a reaction temperature of 50 °C, and an initiator concentration of 1.0 phr. The monomer conversion, grafting efficiency, and grafting percentage were 91.9–94.1, 20.8–38.9, and 2.1–9.9%, respectively, depending on the monomer content. It was shown that the polarity of the natural rubber increased after grafting. The (PAA-co-PAM)-DPNR was then mixed with silica to prepare DPNR/silica composites. The presence of the (PAA-co-PAM)-DPNR and silica in the composites was found to improve the mechanical properties of the DPNR. The incorporation of 10 phr of silica into the (PAA-co-PAM)-DPNR with 10 phr monomer increased its tensile strength by 1.55 times when compared to 10 phr of silica loaded into the DPNR. The silica-filled (PAA-co-PAM)-DPNR provided s higher storage modulus, higher Tg, and a lower tan δ peak, indicating stronger modified DPNR/silica interactions and greater thermal stability when compared to silica-filled DPNR.

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“…The degree of pH responsiveness could also be controlled by varying the methacrylic acid (MAA) monomer content during the polymerization. [ 80 ] As demonstrated by Wang et al, interfacial polymerization can also be facilitated by Pickering emulsions. The group prepared methyl laurate‐loaded polyurethane microcapsules by interfacial polymerization in Pickering emulsion stabilized by TiO 2 nanoparticles.…”

Section: Fragrance Encapsulationmentioning

confidence: 99%

Encapsulation of Fragrances in Micro‐ and Nano‐Capsules, Polymeric Micelles, and Polymersomes

Russell

Bruns

2023

Macromol. Rapid Commun.

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Fragrances are ubiquitously and extensively used in everyday life and several industrial applications, including perfumes, textiles, laundry formulations, hygiene household products, and food products. However, the intrinsic volatility of these small organic molecules leaves them particularly susceptible to fast depletion from a product or from the surface they have been applied to. Encapsulation is a very effective method to limit the loss of fragrance during their use and to sustain their release. This review gives an overview of the different materials and techniques used for the encapsulation of fragrances, scents, and aromas, as well as the methods used to characterize the resulting encapsulation systems, with a particular focus on cyclodextrins, polymer microcapsules, inorganic microcapsules, block copolymer micelles, and polymersomes for fragrance encapsulation, sustained release, and controlled release.

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Synthesis of crosslinked poly(methacrylic acid) shell/lipid core colloidal nanoparticles via L-in-Lm interfacial polymerization and their pH responsiveness

Cited by 8 publications

References 44 publications

Study on the Preparation and Anti-CO₂ Corrosion Performance of Soap-Free Latex for Oil Well Cement

Study on the Preparation and Anti-CO₂ Corrosion Performance of Soap-Free Latex for Oil Well Cement

Preparation of Poly(acrylic acid-co-acrylamide)-Grafted Deproteinized Natural Rubber and Its Effect on the Properties of Natural Rubber/Silica Composites

Encapsulation of Fragrances in Micro‐ and Nano‐Capsules, Polymeric Micelles, and Polymersomes

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Synthesis of crosslinked poly(methacrylic acid) shell/lipid core colloidal nanoparticles via L-in-Lm interfacial polymerization and their pH responsiveness

Cited by 8 publications

References 44 publications

Study on the Preparation and Anti-CO2 Corrosion Performance of Soap-Free Latex for Oil Well Cement

Study on the Preparation and Anti-CO2 Corrosion Performance of Soap-Free Latex for Oil Well Cement

Preparation of Poly(acrylic acid-co-acrylamide)-Grafted Deproteinized Natural Rubber and Its Effect on the Properties of Natural Rubber/Silica Composites

Encapsulation of Fragrances in Micro‐ and Nano‐Capsules, Polymeric Micelles, and Polymersomes

Contact Info

Product

Resources

About

Study on the Preparation and Anti-CO₂ Corrosion Performance of Soap-Free Latex for Oil Well Cement

Study on the Preparation and Anti-CO₂ Corrosion Performance of Soap-Free Latex for Oil Well Cement