Melt spinnability of long chain cellulose esters

Willberg‐Keyriläinen, Pia; Rokkonen, Teijo; Malm, Tero; Harlin, Ali; Ropponen, Jarmo

doi:10.1002/app.49588

Cited by 12 publications

(10 citation statements)

References 31 publications

(44 reference statements)

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“…Therefore, the sequence of activities to produce this material includes the optimization of the electrospinning process and, simultaneously, the process of incorporating essential oils, via coaxial electrospinning (core/shell needle) and dual‐jet electrospinning (adjacent needles). Another form of fiber production is meltspinning, in which PET is melted at 130°C; 23 however, this technique would decompose or volatilize the essential oil. Therefore, the wet spinning technique is more viable.…”

Section: Resultsmentioning

confidence: 99%

Recycled polyester nanofiber as a reservoir for essential oil release

Venturelli

Immich

Souza

2020

J of Applied Polymer Sci

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The importance of creating sustainable alternatives for products that can be easily recyclable, such as, poly (ethylene terephthalate) (PET), is not new, being textile fibers the product of greatest interest. The objective of this work is to propose a recycling alternative for PET bottles for fiber production as a reservoir of essential oils for aromatherapy applications. The fibers were obtained via coaxial and dual‐jet electrospinning techniques. The material used in the impregnation and release of peppermint oil was PET originating from disposable bottles. The release of oil from the electrospun fibers was quantified by UV–vis spectroscopy. For the fibers produced by dual‐jet electrospinning the cumulative release of peppermint reached around 70% after 30 days. The sample obtained by coaxial electrospinning had a core‐shell structure and the amount of oil released was 33% after 30 days. In this investigation, a less aggressive process was introduced, making the electrospinning of PET a viable technique for essential oil impregnation. Dual‐jet as well as coaxial electrospinning showed slower release than values reported in the literature. Thus, a procedure with more favorable working conditions was developed, making the process more feasible and serving as an alternative for recycling PET bottles to produce functional textiles.

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Section: Resultsmentioning

confidence: 99%

Recycled polyester nanofiber as a reservoir for essential oil release

Venturelli

Immich

Souza

2020

J of Applied Polymer Sci

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“…[203] For example, cellulose octanoate (C8) and cellulose palmitate (C16) are thermally processible without using plasticizers. [204] However, chemical modification with long chain fatty acids usually requires high temperature, long reaction times, catalysts, and/or special acylation to enhance reactivity. [205] These harsh conditions often cause significant degradation of the cellulose and makes the process expensive and less efficient.…”

Section: Cellulose Thermal Processingmentioning

confidence: 99%

Fiber‐Based Biopolymer Processing as a Route toward Sustainability

Shi

et al. 2021

Advanced Materials

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nomic losses, and a reduction in natural fossil resources. With the current recycling infrastructure, only 14% of current plastic-packaging waste is collected, and even with this recycling, 4% is lost during the process and 8% is redirected for the fabrication of lower-value applications. [5] The long degradation half-lives of synthetic plastics, which break down in the environment over decades or centuries, is the central problem of sustainability. [4,6] Therefore, seeking sustainable and biodegradable alternatives to synthetic plastics have become a pressing task. Developing biodegradable products from renewable resources (e.g., natural biopolymers) represents the best option by fitting material design, production, use, and disposal into a circular materials lifecycle approach (Figure 1b). [7] Instead of losing fossil fuel resources into landfills and causing environmental burdens, natural biopolymers offer options for composting/degradation, thus, recycling the carbon back to environmental cycles for the regeneration of feedstocks. Besides being sustainable and biodegradable, fibrous structural biopolymers from plants (e.g., cellulose) and animals (e.g., silk, chitin) have unique hierarchical structures, with structural integrity, flexibility, and toughness. Therefore, fibrous structural biopolymers represent a class of material that could help to supplement or replace some conventional synthetic plastics. Additionally, the inherent biocompatibility of most natural biopolymers makes them important candidates for added-value applications, such as in regenerative medicine, drug delivery, and tissueimplantable devices. Among these natural biopolymers, cellulose, chitin, and silk fibroin represent the most abundant and investigated biopolymers in the categories of polysaccharides and proteins (Table 1).The first step in this progression toward sustainability is to process fibrous biopolymers into material formats suitable for targeted applications. The sophisticated hierarchical structure of fibrous biopolymers, which consists of well-organized structural features from molecular to nano-to macroscopic length scales, employ extensive hydrogen bonding networks embedded within semicrystalline structures across all structural levels. This structural stability endows fibrous biopolymers with exceptional mechanical properties, but also generates challenges with the direct processing of the fibrous materials into useful material formats via traditional thermal processing methods that are widely used for synthetic polymer processing Some of the most abundant biomass on earth is sequestered in fibrous biopolymers like cellulose, chitin, and silk. These types of natural materials offer unique and striking mechanical and functional features that have driven strong interest in their utility for a range of applications, while also matching environmental sustainability needs. However, these material systems are challenging to process in cost-competitive ways to compete with synthetic plastics due to the limited options for ther...

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“…The spun-laid technique uses polymers hard to break down while the air-laid and wet-laid forming processes utilize short fibers to form webs and bonds them with binders that are biodegradable or water-soluble (Blackburn 2005;Russel 2007). However, nowadays, there is a lot of work seeking the inclusion of bio-based materials in the spun-laid technology, as the recent work by Willberg-Keyrila ¨inen et al (Willberg-Keyrila ¨inen et al 2020) which shows the use of thermoplastic cellulose fatty acid esters with a polyolefin-like rheology properties for fiber production. The authors concluded that these novel cellulose-based fibers can provide a renewable and recyclable alternative for spun-laid PP in several hygienic textile.…”

Section: Introductionmentioning

confidence: 99%

Bio-based materials for nonwovens

2021

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The nonwoven industry is one of the most innovative and important branches of the global fiber products industry. However, the use of petrochemicalbased materials in many nonwoven products leads to severe environmental issues such as generation of microplastics. Synthetic material use in nonwovens is currently around 66%. This review covers potential technologies for the use of bio-based materials in nonwoven products. The current generation of nonwoven products relies heavily on the use of synthetic binders and fibers. These materials allow for products with high functional properties, such as permanence, strength, bulk, and haptic properties. The next generation of nonwoven products will have a higher fraction of natural and renewable materials as both binders and fiber elements. There are a wide range of materials under investigation in various nonwoven product categories. Especially, lignocellulosic materials are of interest. This includes traditional pulp fibers, regenerated cellulose fibers, lignin binders and nanomaterials derived from wood. The development of water stable, strong interfiber bonding concepts is one of the main problems to be solved for advancing biobased nonwoven products.

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Melt spinnability of long chain cellulose esters

Cited by 12 publications

References 31 publications

Recycled polyester nanofiber as a reservoir for essential oil release

Recycled polyester nanofiber as a reservoir for essential oil release

Fiber‐Based Biopolymer Processing as a Route toward Sustainability

Bio-based materials for nonwovens

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