Wettability tuning of natural rubber/polyvinylpyrrolidone electrospun nonwoven mats

Development of co‐electrospun membrane composed poly(l‐co‐d,l‐lactic acid) and natural rubber with potential application in dermal dressing

“…It is noted that there was only a sum of the main peaks characteristic of both polymers, thereby providing evidence for the presence of NR in the electrospun PLDLA membranes. A similar result was also observed by Andrade et al, 25 in their study regarding the electrospinning of NR and PVP. Only the main characteristic bands of NR and PVP were observed in the spectrum of the co-electrospun materials, confirming only a physical interaction between both polymers at all concentrations investigated.…”

“…Lastly, the peak at 840 cm À1 was associated with outof-plane bending vibration CH of cis-1.4-isoprene. 25,38,39 On the other hand, no peaks indicative of the presence of proteins and lipids within the colloidal structure of the elastomer were observed. According to some studies, the presence of proteins and lipids is evident at 3400 and 1545 cm À1 , which are peaks attributed to the N H stretching of amine and secondary amide found in proteins.…”

“…Studies emphasize the feasibility of including natural rubber latex (NR) with other polymers to enhance the flexibility, malleability, and bioactivity of these materials. 10,25,26 The NR is a natural polymer extracted from the rubber tree Hevea brasiliensis and consists of a macromolecule formed by extensive poly(cis-1,4-isoprene) chains. This material has attracted significant interest in the biomedical field due to its remarkable biocompatibility and its capacity to stimulate angiogenesis.…”

“…This material has attracted significant interest in the biomedical field due to its remarkable biocompatibility and its capacity to stimulate angiogenesis. 25,27 Research conducted by Guerra et al 27 shows that NR has the ability to stimulate cell adhesion and proliferation. Furthermore, studies also indicate that NR accelerates the healing process and plays a significant role in the regeneration of injured tissues.…”

Ultra-violet light-driven green oxygen scavenging composite made of PVA/NRL for active packaging: an alternative to metallic oxygen scavengers

“…Polyvinyl alcohol has a poor resistance to water because of the numerous hydroxyl groups in its chain 44 Andrade et al ., 2022, reported that casted NRL films showed a water contact angle of 95.2°, making them hydrophobic surfaces, and adding an equal proportion of polyvinyl pyrrolidine has decreased the contact angle to 64.5° and hence increased the hydrophilicity. The author also reported that the physical blending of hydrophilic material with NRL will decrease the contact angle.…”