Nanostructured Multiphase Polymer Networks

Pfeifer, Carmem S.

doi:10.1007/978-3-642-31107-9_47

Cited by 1 publication

(1 citation statement)

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“…105,109,110 The final deviation from 100% transmittance is perceived as the upper limit of onset since phase separation may emerge at size scales that are not detectable by the spectrometer, especially when the phase separation follows the nucleation and growth mechanism. 111 The study of Hasa et al on an IPN system that consists of butyl acrylate and difunctional oxetane suggests a close overlap between the maximum transmittance drop time and the gel point (Figure 7c). 112 Following gelation, the maximum turbidity may exhibit two distinct patterns including "modest remaining" (1) or "partial recovery" (2), as illustrated in Figure 7b.…”

Section: Characterization Toolboxmentioning

confidence: 80%

From Unregulated Networks to Designed Microstructures: Introducing Heterogeneity at Different Length Scales in Photopolymers for Additive Manufacturing

Ahmadi,

Ehrmann,

Koch

et al. 2024

Chem. Rev.

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Photopolymers have been optimized as protective and decorative coating materials for decades. However, with the rise of additive manufacturing technologies, vat photopolymerization has unlocked the use of photopolymers for three-dimensional objects with new material requirements. Thus, the originally highly cross-linked, amorphous architecture of photopolymers cannot match the expectations for modern materials anymore, revealing the largely unanswered question of how diverse properties can be achieved in photopolymers. Herein, we review how microstructural features in soft matter materials should be designed and implemented to obtain high performance materials. We then translate these findings into chemical design suggestions for enhanced printable photopolymers. Based on this analysis, we have found microstructural heterogenization to be the most powerful tool to tune photopolymer performance. By combining the chemical toolbox for photopolymerization and the analytical toolbox for microstructural characterization, we examine current strategies for physical heterogenization (fillers, inkjet printing) and chemical heterogenization (semicrystalline polymers, block copolymers, interpenetrating networks, photopolymerization induced phase separation) of photopolymers and put them into a material scientific context to develop a roadmap for improving and diversifying photopolymers' performance.

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