Aminolysis of poly(hydroxybutyrate)-based multicomponent films for the impregnation of bovine serum albumin

Raza, Zulfiqar Ali; Khalil, Shanza; Majeed, Muhammad Irfan; Sarwar, Tanzeel

doi:10.1007/s00289-022-04165-7

Cited by 11 publications

(9 citation statements)

References 43 publications

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“…The peaks at 3354.7 cm −1 , 2358.1 cm −1 , and 1755.0 cm −1 correspond to O−H bending vibration, bending vibration, and C = O stretching vibration, respectively, (Figure 5) indicating that the ability of the membrane surface to form hydrogen bonds with water is greatly improved. 50−52 The peaks at both 2996.2 and 2944.0 cm −1 correspond to saturated C−H bending vibration and the peaks at both 1455.4 and 1389.6 cm −1 correspond to the C−H on the methyl group bending vibration, 53,54 indicating that the structure of PLA is not destroyed by the addition of additives. This shows that the two additives change the physical structure of the membrane through hydrogen bonding without damaging the chemical structure of the hollow-fiber membrane, and then improves the surface performance of the membrane.…”

Section: Resultsmentioning

confidence: 99%

Development of Hydrophilic Polylactic Acid Hollow-Fiber Membranes for Water Remediation

Zhang

Yang

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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In past decades, membrane technology has been widely believed for water remediation and purification. However, the waste membranes, which is conventional nonbiodegradable polymeric materials, causes secondary pollution and hampers the application of membrane technology. As an industrialized biodegradable polymer, polylactic acid (PLA) is believed as an alternative to conventional polymeric membrane materials, while suffering from its intrinsic strong hydrophobic properties. Herein we provide a facile method to improve the hydrophilicity of PLA hollow-fiber membranes through tailoring the phase inversion process by introducing Tween-80 and polyvinylpyrrolidone K30 (PVP-K30) as coadditives. During the phase inversion process, Tween-80 enhances the dispersity of the PVP-K30 and promotes the shifts of the PVP-K30 toward the surface of the membrane through hydrogen bonding, tailoring the pore structure and the surface properties of the membranes. Consequently, the water permeance of the modified PLA membranes increases by 816.4% (151.2 L m–2 h–1 bar–1). Moreover, the membranes also demonstrate excellent antifouling performance with permeance recovery rate up to 86.8%, showing strong promise in substituting conventional polymer membranes for water remediation.

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Section: Resultsmentioning

confidence: 99%

Development of Hydrophilic Polylactic Acid Hollow-Fiber Membranes for Water Remediation

Zhang

Yang

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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“…The PHB‐based multicomponent films were prepared using the modified solvent casting method [6] . Briefly, the desired amounts of PHB and PLA were added into chloroform under magnetic stirring at 50 °C for 1 h. The contents were poured onto a clean and dry Petri dish and kept at room temperature in a fume hood to evaporate the solvent, peeled off the dried film and subjected to freeze‐drying overnight (Figure 9).…”

Section: Methodsmentioning

confidence: 99%

“…spectrophotometer at 595 nm (for BSA) or 230 nm (for casein). [6] The blank sample contained 60 μl distilled water instead of protein solution (Eq. 3).…”

Section: Lipase Activity ðU MLmentioning

confidence: 99%

“…[3][4][5] The theoretical solubility parameters of both PHB and PLA are comparable so that they are miscible; however, still practically dependent upon various factors like molecular masses of precursors, blend ratio and the blending approach. [6] Thereby, the PHB/PLA composites had been found biodegrad-able with good film formation behavior and useable for various applications in foods, drugs and nutrients' packing and delivery applications. [7] As both PHB and PLA are hydrophobic so their blend too.…”

Section: Introductionmentioning

confidence: 99%

“…It is an eco‐friendly alternative to synthetic polyesters due to its good hydrolytic degradation rate, low toxicity, good processibility and so on [3–5] . The theoretical solubility parameters of both PHB and PLA are comparable so that they are miscible; however, still practically dependent upon various factors like molecular masses of precursors, blend ratio and the blending approach [6] . Thereby, the PHB/PLA composites had been found biodegradable with good film formation behavior and useable for various applications in foods, drugs and nutrients’ packing and delivery applications [7] …”

Section: Introductionmentioning

confidence: 99%

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Lipolysis of Poly(Hydroxybutyrate)‐Based Films for the Tailored Release of Hydrophilic Proteins

Raza

Khatoon

2023

ChemistrySelect

Self Cite

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We report the fabrication of poly(lactic acid) mediated poly(hydroxybutyrate) (PHB) films using a solvent casting approach. The prepared films were employed to attain additional polarities for making them hydrophilic for impregnating certain model proteins. The extent of lipolysis was assessed via lipase, hydrolytic and water contact angle (WCA) assays. The films were examined for surface chemical and thermogravimetric profiles. The lipase and hydrolytic activities turned out to be 7.28 U/mL.min and 7.85 mL/g, respectively; whereas, the WCA of the test film reduced from 100.0° to 52.8° on lipolysis which on impregnating with the proteins further reduced to <30.0°. The specimens expressed surface smoothness after lipase treatment; however, roughened after the adsorption of proteins. The surface chemical analysis exhibited increased oxygen contents after lipolysis, indicating the inclusion of oxygen‐containing polar functionalities whereas amide functionality after protein adsorption. The results suggest the feasibility of protein‐adsorbed PHB films in sustained drug delivery applications.

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Synthesis of silver sulfide nanostructures and intercalation thereof into poly(hydroxybutyrate)-based multicomponent film

Raza¹,

Akram²,

Rehman³

et al. 2023

Polym. Bull.

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Aminolysis of poly(hydroxybutyrate)-based multicomponent films for the impregnation of bovine serum albumin

Cited by 11 publications

References 43 publications

Development of Hydrophilic Polylactic Acid Hollow-Fiber Membranes for Water Remediation

Development of Hydrophilic Polylactic Acid Hollow-Fiber Membranes for Water Remediation

Lipolysis of Poly(Hydroxybutyrate)‐Based Films for the Tailored Release of Hydrophilic Proteins

Synthesis of silver sulfide nanostructures and intercalation thereof into poly(hydroxybutyrate)-based multicomponent film

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