Antibacterial polymer fibres by rosin compounding and melt-spinning

Kanerva, Mikko; Puolakka, Arja; Takala, Timo M.; Elert, Anna Maria; Mylläri, Ville; Jönkkäri, Ilari; Sarlin, Essi; Seitsonen, Jani; Ruokolainen, Janne; Saris, Per E. J.; Vuorinen, Jyrki

doi:10.1016/j.mtcomm.2019.05.003

Cited by 22 publications

(45 citation statements)

References 36 publications

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“…In this study, a smooth film was formed on PLA granules using myrrh ethanolic extract (B) and on the PLA granules with myrrh powder (C) using myrrh aqueous extract (see Figure 2 ). It is known that the insertion of fillers (nanoparticles, crushed particles) in melt-spun yarns decreases their mechanical properties [ 10 , 12 , 20 ]. Due to the huge number of unmelted myrrh particles, melt-spun yarns with aqueous myrrh extract (C yarns) exhibit significantly lower mechanical properties and fragility, and such yarns would therefore not be suitable for use in further processes (knitting, weaving, braiding, etc.).…”

Section: Resultsmentioning

confidence: 99%

“…This resulted in the successful formation of polypropylene (PP) melt-spun multifilament yarns with propolis extract [ 18 ] or PET braided yarns with Laurus nobilis [ 19 ]. M. Kanerva and coauthors [ 20 ] formed polyethylene (PE), PP, PLA, polyamide (PA) and cornstarch-based biopolymer (CS) melt-spun yarns with pine rosin. For all fibers, the addition of rosin tended to decrease the initial stiffness of the yarns.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Myrrh Extracts on the Properties of PLA Films and Melt-Spun Multifilament Yarns

et al. 2020

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A possible approach for providing new properties for textiles is the insertion of natural ingredients into the textile product during the process of its manufacture. Myrrh has long been used in medicine as an antibacterial and antifungal material. Polylactide (PLA) is a thermoplastic synthetic biopolymer obtained from renewable resources—and due its biodegradability, is also widely used in medicine. In this study, films and multifilament yarns from modified biodegradable PLA granules with ethanolic and aqueous myrrh extracts were developed and characterized. Optical microscopy was used to determine the surface morphology of PLA/myrrh multifilament yarns. Tensile tests, ultraviolet-visible (UV-vis), differential scanning calorimetry (DSC) were applied to determine, consequently, mechanical, optical properties and degree of crystallinity of PLA/myrrh films and multifilament yarns. The chemical composition of PLA/myrrh multifilament yarns was estimated by Fourier-transform infrared (FTIR) spectroscopy method. The results showed that it is possible to form PLA melt-spun multifilament yarns with myrrh extract. The type of myrrh extract (ethanolic or aqueous) has a significant influence on the mechanical and optical properties of the PLA films and melt-spun yarns. The mechanical properties of PLA films and melt-spun multifilament yarns formed from PLA granules with aqueous myrrh extract decreased 19% and 21% more than PLA with ethanolic extract, respectively. Analysis of UV-vis spectra showed that, due to the yellow hue, the reflectance of PLA films and melt-spun PLA multifilament yarns modified with myrrh extracts decreased exponentially. The DSC test showed that multifilament yarns from PLA modified with aqueous extract had the highest degree of crystallization.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Myrrh Extracts on the Properties of PLA Films and Melt-Spun Multifilament Yarns

et al. 2020

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“…The antibacterial response in general is not unexpected, since the rosins of several wood species have relatively fast (< 24 h) and strong activity against S. aureus compared to other wood extracts, and among other bacterial strains (Vainio-Kaila et al 2017a). However, processing and probable chemical interaction can hinder the effect of rosin in various polymeric systems (Kanerva et al 2019). The chemical composition of rosin can be analyzed in detail.…”

Section: Antibacterial Activitymentioning

confidence: 99%

Comparison of Rosin and Propolis Antimicrobials in Cellulose Acetate Fibers Against Staphylococcus aureus

Kanerva

Matrenichev

Layek

et al. 2020

BioRes

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The quantitative difference in the antibacterial response was measured for pine rosin and propolis against Staphylococcus aureus ATCC 12598. The activity was studied for fibrous networks that form entirely bio-based cellulose-acetate (CA) materials. The analysis considers the effects of bacterial input, additive dosage, solvent type, variation in preparation, as well as the effect of storage time. Based on the results, the electrospun network structure is dependent on the solvent and the concentration of rosin and propolis. Both rosin and propolis improved the cellulose acetate solution processability, yet they formed beads at high concentrations. Rosin and propolis created strong antibacterial properties when these material systems were immersed in the liquid for 24 h at room temperature. The response remained visible for a minimum of two months. The electrospun networks of water and DMAc solvent systems with 1 to 5 wt% rosin content were clearly more efficient (i.e., decrease of 4 to 6 logs in colony forming units per mL) than the propolis networks, even after two months. This efficiency is likely due to the high content of abietic acids present in the rosin, which is based on the Fourier transform infrared spectra. The results of the additional analysis and cell cultivation with dermal fibroblast cells indicated an impairing effect on skin tissue by the rosin at a 1 wt% concentration compared to the pure CA fibers.

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“…Therefore, thermoplastic processing of starch is difficult due to the presence of intermolecular and intramolecular hydrogen bond linkages in its macromolecules that restrict the molecular chain movement due to the presence of resilient interactive forces [5]. Such interactive forces are repelled by the use of plasticizers such as glycol, glycerol, sorbitol or urea that weaken the hydrogen bonds present within the macromolecules and thermoplastic processing of starch is improved [6]. These plasticizers disrupt the crystalline structure of starch macromolecules and allows free molecular chain movement by nullifying the resilient interactive forces by a process called gelatinization [7].…”

Section: Introductionmentioning

confidence: 99%

Improved Thermal Processing of Polylactic Acid/Oxidized Starch Composites and Flame-Retardant Behavior of Intumescent Non-Wovens

Maqsood

Seide

2020

Coatings

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Thermoplastic processing and spinning of native starch is very challenging due to (a) the linear and branched polymers (amylose and amylopectin) present in its structure and (b) the presence of inter-and-intramolecular hydrogen bond linkages in its macromolecules that restrict the molecular chain mobility. Therefore, in this study, oxidized starch (OS) (obtained after oxidation of native starch with sodium perborate) was melt-blended with polylactic acid (PLA) polymer to prepare PLA/OS blends that were then mixed together with ammonium polyphosphate (APP), a halogen-free flame retardant (FR) used as acid donor in intumescent formulations on twin-screw extruder to prepare PLA/OS/APP composites. OS with different concentrations also served as bio-based carbonic source in intumescent formulations. PLA/OS/APP composites were melt spun to multifilament fibers on pilot scale melt-spinning machine and their crystallinity and mechanical properties were optimized by varying spinning parameters. The crystallinity of the fibers was studied by differential scanning calorimetry and thermal stabilities were analyzed by thermogravimetric analysis. Scanning electron microscopy was used to investigate the surface morphology and dispersion of the additives in the fibers. Needle-punched non-woven fabrics from as prepared melt-spun PLA/OS/APP fibers were developed and their fire properties such as heat release rate, total heat release, time to ignition, residual mass % etc. by cone calorimetry test were measured. It was found that PLA/OS/APP composites can be melt spun to multifilament fibers and non-woven flame-retardant fabrics produced thereof can be used in industrial FR applications.

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Antibacterial polymer fibres by rosin compounding and melt-spinning

Cited by 22 publications

References 36 publications

Influence of Myrrh Extracts on the Properties of PLA Films and Melt-Spun Multifilament Yarns

Influence of Myrrh Extracts on the Properties of PLA Films and Melt-Spun Multifilament Yarns

Comparison of Rosin and Propolis Antimicrobials in Cellulose Acetate Fibers Against Staphylococcus aureus

Improved Thermal Processing of Polylactic Acid/Oxidized Starch Composites and Flame-Retardant Behavior of Intumescent Non-Wovens

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