TY - JOUR

T1 - Comparative Study of Supramolecular Networks and Polymer Blends Based on Polylactide and Polysiloxanes

AU - Мирошниченко, Анна Сергеевна

AU - Головенко, Екатерина Алексеевна

AU - Герасимов, Сергей Александрович

AU - Исламова, Регина Маратовна

PY - 2026/10/6

Y1 - 2026/10/6

N2 - Supramolecular networks of polylactide (PLA) and aminopropyl-terminated polysiloxane (APDMS) with PLA:APDMS mass ratios of 10:1, 30:1, and 50:1 have been synthesized by a catalyst-free approach. FTIR and 1H NMR confirm cross-linking via noncovalent interactions. SEM shows relatively homogeneous film morphology and high transparency of 80% in the visible region for PLA–APDMS (10:1). The supramolecular networks PLA–APDMS possess a tunable decrease in the glass transition temperature (Tg) to 37°C with varying APDMS content, a high tensile strength (σ = 32 MPa) and good elasticity (ε = 65%). PLA–APDMS provide a shape-memory effect, where the crystalline PLA phase acts as rigid netpoints and APDMS chains serve as switchable soft segments. For comparison, polymer blends (composites) PLA–PDMS have been fabricated using a commercially available silicone elastomer kit (PDMS) and PLA with 10, 30, 50, and 70 wt% of PDMS. For PLA–PDMS blends, no significant changes in Tg upon PDMS content increase are observed. Both PLA–APDMS and PLA–PDMS exhibit surface hydrophobicity. PLA, as a dominant component of supramolecular networks and composites, provides thermal stability typical for polyesters with weight loss of 10% at 300°C–324°C and 317°C–321°C in air and argon atmosphere, respectively. The obtained PLA–APDMS can be suitable for potential advanced applications ranging from shape-memory biomedical devices to flexible optoelectronic components.

AB - Supramolecular networks of polylactide (PLA) and aminopropyl-terminated polysiloxane (APDMS) with PLA:APDMS mass ratios of 10:1, 30:1, and 50:1 have been synthesized by a catalyst-free approach. FTIR and 1H NMR confirm cross-linking via noncovalent interactions. SEM shows relatively homogeneous film morphology and high transparency of 80% in the visible region for PLA–APDMS (10:1). The supramolecular networks PLA–APDMS possess a tunable decrease in the glass transition temperature (Tg) to 37°C with varying APDMS content, a high tensile strength (σ = 32 MPa) and good elasticity (ε = 65%). PLA–APDMS provide a shape-memory effect, where the crystalline PLA phase acts as rigid netpoints and APDMS chains serve as switchable soft segments. For comparison, polymer blends (composites) PLA–PDMS have been fabricated using a commercially available silicone elastomer kit (PDMS) and PLA with 10, 30, 50, and 70 wt% of PDMS. For PLA–PDMS blends, no significant changes in Tg upon PDMS content increase are observed. Both PLA–APDMS and PLA–PDMS exhibit surface hydrophobicity. PLA, as a dominant component of supramolecular networks and composites, provides thermal stability typical for polyesters with weight loss of 10% at 300°C–324°C and 317°C–321°C in air and argon atmosphere, respectively. The obtained PLA–APDMS can be suitable for potential advanced applications ranging from shape-memory biomedical devices to flexible optoelectronic components.

KW - composite

KW - glass transition temperature

KW - polylactide

KW - polymer blend

KW - polysiloxanes

KW - supramolecular network

UR - https://www.mendeley.com/catalogue/46782763-59b9-332a-8c7f-613e205c8ec7/

U2 - 10.1002/pen.70866

DO - 10.1002/pen.70866

M3 - Article

JO - Polymer Engineering and Science

JF - Polymer Engineering and Science

SN - 0032-3888

ER -