The spectroscopic and physical properties of PMMA/PCL blend incorporated with graphene oxide

Alhusaiki-Alghamdi, H.M.

doi:10.1016/j.rinp.2021.104125

Cited by 22 publications

(5 citation statements)

References 28 publications

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“…Secondly, with the same NGO amount, the increasing rate of break strength of P(MMA-BA-AA)/NGO was larger than that of P(MMA-BA-HEA)/NGO, and the rate of decline elongation at break of P(MMA-BA-AA)/NGO was smaller. The increase in break strength was caused by the strengthening effect of graphene-based nanomaterials, as other researchers reported [ 25 , 26 , 27 ]. Briefly, the amino group on NGO would have a certain degree of interfacial interaction with carboxyl or hydroxyl groups on polyacrylate.…”

Section: Resultssupporting

confidence: 56%

pH-Induced Electrostatic Interaction between Polyacrylates and Amino-Functionalized Graphene Oxide on Stability and Coating Performances

Zhang

et al. 2021

Polymers

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Electrostatic interaction between polymers and nanofillers is of great importance for the properties and design of their composites. Polyacrylates with carboxyl, hydroxyl and acylamino groups were synthesized via emulsion polymerization and marked as P(MMA-BA-AA), P(MMA-BA-HEA) and P(MMA-BA-AM), respectively. Amino-functionalized graphene oxide (NGO) was prepared by Hoffman rearrangement using GO as the raw material. The polyacrylate composites were prepared by mixing NGO with each of the three kinds of polyacrylate. Effects of pH and NGO amounts on the properties of polyacrylate composites were studied. It was found that the surface charge of polyacrylate and NGO had the greatest effect on the composite properties. P(MMA-BA-AM)/NGO was not stable at any pH (2–8). With the same NGO amount of 0.1 wt%, the toughening effect of NGO on P(MMA-BA-AA) was larger than that on P(MMA-BA-HEA). The break strength of P(MMA-BA-AA)/NGO and P(MMA-BA-HEA)/NGO increased to 5.22 MPa by 47% and 3.08 MPa by 31%, respectively. NGO could increase the thermal stability of P(MMA-BA-AA) and P(MMA-BA-HEA) to different degrees. The polyacrylate film-forming processes were tested, and it showed that NGO influenced polyacrylate through the whole film-forming process. The results provide potential methods for the design of polymer-based nanocomposites.

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Section: Resultssupporting

confidence: 56%

pH-Induced Electrostatic Interaction between Polyacrylates and Amino-Functionalized Graphene Oxide on Stability and Coating Performances

Zhang

et al. 2021

Polymers

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“…In the case of PCL, a peak at 1733 cm –1 attributes to the CO stretching . In the case of PCL, the peaks at 1733 and 1260 cm –1 are attributed to CO and C–O–C stretching vibrations, and the absorption peaks at 2954 and 2874 cm –1 are caused by asymmetric stretching vibrations of −CH 2 , all of which are characteristic peaks of PCL. − Incorporating PPE into PCL results in a slight reduction in the intensity of the peaks compared to pure PCL. One of the major peaks of PPE, located at 3352 cm –1 , corresponds to the −OH vibration of polyphenols in PPE.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Polycaprolactone (PCL) Antimicrobial Wound Dressing Loaded with Pomegranate Peel Extract

Wang,

Zhou

et al. 2023

ACS Omega

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In recent years, medicinal plant extracts have received remarkable attention due to their wound-healing properties. In this study, polycaprolactone (PCL) electrospun nanofiber membranes incorporated with different concentrations of pomegranate peel extract (PPE) were prepared. The results of the SEM and FTIR experiments demonstrated that the morphology of nanofiber is smooth, fine, and bead-free, and the PPE was well introduced into the nanofiber membranes. Moreover, the outcomes of the mechanical property tests demonstrated that the nanofiber membrane made of PCL and loaded with PPE exhibited remarkable mechanical characteristics, indicating that it could fulfill the essential mechanical requisites for wound dressings. The findings of the in vitro drug release investigations indicated that PPE was instantly released within 20 h and subsequently released gradually over an extended period by the composite nanofiber membranes. Meanwhile, the DPPH radical scavenging test confirmed that the nanofiber membranes loaded with PPE exhibited significant antioxidant properties. Antimicrobial experiments showed higher PPE loading, and the nanofiber membranes showed higher antimicrobial activity against Staphylococcus aureus, Escherichia coli , and Candida albicans. The results of the cellular experiments showed that the composite nanofiber membranes were nontoxic and promoted the proliferation of L929 cells. In summary, electrospun nanofiber membranes loaded with PPE can be used as a wound dressing.

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“…High-performance organic field-effect transistors require a dielectric with low surface polarity and high insulation properties, but it is challenging to achieve both properties in a single-layer dielectric. 27 , 28 , 29 , 30 , 31 , 32 To solve the problem, a double-layer gate dielectric was utilized, which included a low-surface-polarity dielectric in contact with the active layer and a high-k insulating layer underneath. This improved the performance of OTFTs by better controlling the interfacial properties, despite the increase in the total dielectric thickness.…”

Section: Introductionmentioning

confidence: 99%

A high-performance organic thin-film transistor with Parylene/PMMA bilayer insulation based on P3HT

Sang,

Li,

et al. 2024

iScience

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The spectroscopic and physical properties of PMMA/PCL blend incorporated with graphene oxide

Cited by 22 publications

References 28 publications

pH-Induced Electrostatic Interaction between Polyacrylates and Amino-Functionalized Graphene Oxide on Stability and Coating Performances

pH-Induced Electrostatic Interaction between Polyacrylates and Amino-Functionalized Graphene Oxide on Stability and Coating Performances

Preparation and Characterization of Polycaprolactone (PCL) Antimicrobial Wound Dressing Loaded with Pomegranate Peel Extract

A high-performance organic thin-film transistor with Parylene/PMMA bilayer insulation based on P3HT

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