The role of synthetic P (<scp>MMA</scp>‐co‐<scp>MAH</scp>) as compatibilizer in the preparation of chlorinated polyethylene/polysodium acrylate water‐swelling rubber

Fang, Zhengping; Zhang, Xingning; Meng, Xiangjian; Luo, Wei; Hu, Huiling; Wang, Zhiguo; He, Peixin; Zhang, Yuhong

doi:10.1002/adv.22149

Cited by 8 publications

(6 citation statements)

References 23 publications

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“…Thus, water absorption rates of the compositions were enhanced by high content of EVA or the presence of high filler concentration. Despite the high network densities, the present samples have exhibited higher water absorption rates compared to those earlier reported for chlorinated polyethylene filled with cross-linked poly (sodium acrylate) SAP in the presence of poly(methyl methacrylate-co-Maleic anhydride) compatibilizers [32] and PDMS-based polyuria which uses water for self-healing. [20]…”

Section: Water-swelling Degree Analysiscontrasting

confidence: 69%

“…The water absorption rates of the various compounds at 1-7 days were computed by using the Equation (2) [32] ; SR 7 and SR eq represents the water-swelling ratio at 7 days and the equilibrium water-swelling respectively.…”

Section: Water-swelling Ratio and Volume Expansion Testmentioning

confidence: 99%

“…At each period, the change in dimensions was quickly monitored using micrometer screw guage. The equations (1–3) were used to calculate their respective degree of water swelling (%), water swelling rates and volume expansion, VE (%) of the various samples respectively.

Swelling degree (%) = (\frac{W_{i} - W_{f}}{w_{i}}) * 100

The water absorption rates of the various compounds at 1–7 days were computed by using the Equation (2) [ 32 ] ; SR 7 and SR eq represents the water‐swelling ratio at 7 days and the equilibrium water‐swelling respectively.

Sr = \frac{{SR}_{7}}{{SR}_{eq}}

The volume expansion was computed using Equation (3), where V i and V s are the respective initial and volume swollen sample.

VE (%) = \frac{v_{i} - v_{S}}{V_{i}} * 100

Re‐usability test was done after the water‐swollen samples were fully dried in the sun and were re‐equilibrated in water following the same swelling method explained above. Their new degrees of swelling and volume expansion were calculated using Equations (1) and (3).…”

Section: Characterizationmentioning

confidence: 99%

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Preparation and characterization of hydrophilic and water‐swellable elastomeric nanocomposites

Mensah

Oduro

2023

Polymer Engineering & Sci

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Highly polar and hydrophilic polymers; ethylene‐vinyl acetate (EVA), epichlorohydrin rubber (GECO), and polyethylene oxide (PEO) reinforced with fillers (carbon black (CB) and/or Silica) were used to prepare water‐swellable rubber nanocomposites. The study showed that although the high content of the GECO delayed vulcanization of the corresponding compounds, the sample filled with desired ratio of GECO/PEO/EVA or GPE, cross‐linked with peroxide exhibited the highest swelling performance of ⁓150%. The samples exhibited good re‐usability performance in the re‐swollen test, after drying. At prolonged water swelling, the tensile strength dropped drastically for compounds with high content of the GPE, due to weak filler‐matrix interactions. On the other hand, the incorporated GPE also increased the rebound resilience (%) property which is a key requirement in green tire fabrication. For example; peroxide cured sample coded SR3 (GPE‐15 phr CB) obtained ⁓30% resilience in non‐swollen state and ⁓53.5% after 1440 min of water‐swelling, which represents a dramatic development of over ⁓78% in rebound resilience. Thus, a proper balance between the GPE content, curing agent and the reinforcements may guarantee high water‐swelling performance and mechanical properties integrity for multifunctional applications such as wound healing, structural works, water collection from oil spillages, and for the development of water‐based sensors.

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Section: Water-swelling Degree Analysiscontrasting

confidence: 69%

Section: Water-swelling Ratio and Volume Expansion Testmentioning

confidence: 99%

Swelling degree (%) = (\frac{W_{i} - W_{f}}{w_{i}}) * 100

Sr = \frac{{SR}_{7}}{{SR}_{eq}}

The volume expansion was computed using Equation (3), where V i and V s are the respective initial and volume swollen sample.

VE (%) = \frac{v_{i} - v_{S}}{V_{i}} * 100

Section: Characterizationmentioning

confidence: 99%

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Preparation and characterization of hydrophilic and water‐swellable elastomeric nanocomposites

Mensah

Oduro

2023

Polymer Engineering & Sci

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“…These results showed that MAH was grafted onto PEW. Compared to the FTIR spectrum of PEW- g -MAH, the FTIR spectrum of PEW- g -MAH-MMA ( Figure 2 b, Spectrum III) shows the peaks of the carbonyl groups in the five-membered anhydride ring at 1849 cm −1 and 1781 cm −1 , and an additional characteristic peak at 1731 cm −1 that can be attributed to the stretching vibration of the carbonyl groups on MMA [ 45 ]. It was observed that there was no absorption peak at 1637 cm −1 due to C=C vibrations, indicating that MAH and MMA were copolymerized and grafted onto the macromolecular chain of PEW.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Maleic Anhydride-Methyl Methacrylate Co-Monomer Grafted Polyethylene Wax for Hot Waxed Wood Process

Niu

Song

2022

Materials

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The beeswax used in Chinese traditional hot waxed wood technology has several drawbacks, such as high price, scarce resources, and poor heat resistance. To expand the application of hot waxing technology in the field of wood decoration and protection, polyethylene wax was modified by a grafted maleic anhydride-methyl methacrylate co-monomer. A type of modified polyethylene wax with low cost, high melting point, high stability, and strong polarity suitable for hot waxed wood was prepared as a replacement for beeswax. The effects of the grafting conditions on the chemical properties, thermal properties, chemical structure, and crystallization properties of modified polyethylene wax were studied and compared to those of beeswax. The results show that maleic anhydride-methyl methacrylate co-monomer grafting can effectively improve the acid value of polyethylene wax. For the ratio of two monomers of 1/1, the total amount of monomer of 8 wt%, the amount of initiator of 2 wt%, the reaction temperature of 150 °C, and the acid value of modified polyethylene wax was consistent with that of beeswax, realizing the simulation of the main chemical properties of beeswax. The thermal stability and melting temperature of the modified polyethylene wax are significantly higher than those of beeswax, its crystal structure is similar to that of beeswax, and the cyclic anhydride groups and ester groups introduced by co-monomer grafting endow it with polar groups that play an important role in the wood hot waxing process.

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“…Additional advantages are nontoxicity, high thermal and chemical resistance, and mechanical strength. These properties are used in such fields as medicine (lenses, dressings, and drug release), agrotechnics (water storage) and construction (waterproofing panels, fillers for fire‐retardant panes) . However, the problem here is that acrylate monomers are very sensitive to changes in environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of cross‐linked poly(sodium acrylate)/sodium silicate hydrogels

Mastalska‐Popławska

Izak

Wójcik

et al. 2019

Polymer Engineering & Sci

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Transparent and intumescent polymer-silicate hydrogels were synthesized by free-radical polymerization, in the presence of the redox initiators system (potassium persulphate/sodium thiosulphate) and cross-linking monomer (N,N 0 -methylenebisacrylamide). Hydrogels obtained in such a manner were rheologically tested and it was found that the same sample with a different sodium acrylate concentration polymerized faster when its content was lower. The spectroscopic and thermal analysis proved that the polymer combines with sodium silicate by hydrogen bonds and during thermal degradation only small polymer fragments and water molecules were released. NMR studies have shown that the content of water glass causes shorter relaxation times. Conducted fire tests showed that glass panes systems filled with the tested hydrogels meet the relevant construction standards and what is their big advantage, a thin 1 mm layer of polymer-silicate gel is sufficient for this purpose. We believe that these results will contribute to the development of intumescent hydrogels with enhanced fireretardant properties.

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The role of synthetic P (MMA‐co‐MAH) as compatibilizer in the preparation of chlorinated polyethylene/polysodium acrylate water‐swelling rubber

Cited by 8 publications

References 23 publications

Preparation and characterization of hydrophilic and water‐swellable elastomeric nanocomposites

Preparation and characterization of hydrophilic and water‐swellable elastomeric nanocomposites

Synthesis and Characterization of Maleic Anhydride-Methyl Methacrylate Co-Monomer Grafted Polyethylene Wax for Hot Waxed Wood Process

Synthesis and characterization of cross‐linked poly(sodium acrylate)/sodium silicate hydrogels

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