Modification of chain extension and crosslinking structures of recycled polyester textile for 3D printing filament

IF 3.8 4区 工程技术 Q2 CHEMISTRY, APPLIED
Lingquan Hu, Jianzhong Sun, Meng Zhang, Jun Liu, Shouxiang Jiang
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引用次数: 0

Abstract

The increase in amount of polyester textile waste is contributing to the severity of environmental pollution because polyester cannot be easily recycled. To reduce the limits of its recyclability, a value-added recycling approach should be explored. This work introduces an approach for recycling polyester textiles into 3D printable filaments. To increase recyclability of polyester textiles, the polyester materials are modified by ADR4468 additive. After the polyester is 3D printed, the sample with 1.0 wt% of ADR4468 shows the highest tensile and compressive strength properties compared with 1.5 and 2.0 wt%, owing to its fewer voids between the printed lines, a fish scale-like morphology that spreads out, and a higher degree of crystallization. Moreover, the mechanism of modification suggests that ADR4468 extends and crosslinks the polyester chains by ring-opening reactions of epoxy groups of ADR4468 and forms sea-island structures. The sea-island structures of bonded polyester branched cores with tangled polyester shell interface areas and unbonded polyester chain areas performed suitable rheological behaviors to recycle polyester textiles for 3D printable filaments production. The filaments can be used to replace commercially available filaments, offer a sustainable option for consumers, and impact both the polyester textile-related recycling and 3D printing industries.

Highlights

  • An approach is proposed to recycle polyester textiles for 3D printing filament
  • The approach uses a mechanical method to recycle polyester textiles
  • Recycled polyesters were modified by ADR4468 to form core-shell structures
  • Core-shell structures were separated by short polyesters(sea-island structure)
  • The structures met rheological behaviors for 3D printing filament

Abstract Image

改变用于 3D 打印丝的再生聚酯纺织品的链延伸和交联结构
由于聚酯不易回收,因此聚酯纺织废料的增加加剧了环境污染的严重性。为了减少其可回收性的限制,应探索增值回收方法。这项工作介绍了一种回收聚酯纺织品成3D打印长丝的方法。为提高涤纶纺织品的可回收性,采用ADR4468添加剂对涤纶材料进行改性。在聚酯进行3D打印后,与含有1.5 wt%和2.0 wt% ADR4468的样品相比,含有1.0 wt% ADR4468的样品显示出最高的拉伸和抗压强度性能,这是因为打印线之间的空隙更少,鱼片状的形态展开,结晶程度更高。改性机理表明,ADR4468通过环氧基的开环反应对聚酯链进行延伸交联,形成海岛结构。具有缠结聚酯壳界面区和未粘合聚酯链区的粘合聚酯支芯的海岛结构表现出合适的流变学行为,可回收聚酯纺织品用于3D打印长丝的生产。这种长丝可用于取代市售长丝,为消费者提供可持续的选择,并影响聚酯纺织品相关的回收和3D打印行业。提出了一种回收聚酯纺织品用于3D打印长丝的方法。该方法采用机械方法回收聚酯纺织品。回收聚酯经ADR4468改性后形成核-壳结构,核-壳结构由短聚酯(海岛结构)分开。该结构满足3D打印长丝的流变特性
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来源期刊
Journal of Vinyl & Additive Technology
Journal of Vinyl & Additive Technology 工程技术-材料科学:纺织
CiteScore
5.40
自引率
14.80%
发文量
73
审稿时长
>12 weeks
期刊介绍: Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.
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