<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Akhila, N. S.</style></author><author><style face="normal" font="default" size="100%">Shrishti, S. K.</style></author><author><style face="normal" font="default" size="100%">Suresh, Sruthi</style></author><author><style face="normal" font="default" size="100%">Torris, Arun</style></author><author><style face="normal" font="default" size="100%">Gowd, E. Bhoje</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Eco-friendly gradient porous poly(3-hydroxybutyrate)/natural fiber aerogels for highly efficient thermo-acoustic insulation</style></title><secondary-title><style face="normal" font="default" size="100%">ACS Applied Polymer Materials</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acousticinsulation</style></keyword><keyword><style  face="normal" font="default" size="100%">aerogels</style></keyword><keyword><style  face="normal" font="default" size="100%">biodegradable</style></keyword><keyword><style  face="normal" font="default" size="100%">flame retardancy</style></keyword><keyword><style  face="normal" font="default" size="100%">Hydrophobic</style></keyword><keyword><style  face="normal" font="default" size="100%">poly(3-hydroxybutyrate)</style></keyword><keyword><style  face="normal" font="default" size="100%">Thermal insulation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2026</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JUN </style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">8</style></volume><pages><style face="normal" font="default" size="100%">8629-8643</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;
	The urgent demand for lightweight thermo-acoustic insulation (TAI) materials in transportation and building infrastructure is constrained by difficulties in synthesis and environmental concerns about nondegradable materials. In this study, a strategy is proposed to create gradient porous, biodegradable, fibrillar aerogels via layer-by-layer casting with poly(3-hydroxybutyrate) (PHB), banana fibers (BF), and cellulose nanofibers (CNFs), followed by unidirectional freezing and freeze-drying. These gradient porous aerogels possess a hierarchical porous structure, ensuring excellent hydrophobicity, mechanical strength, and thermal dimensional stability, and exhibit excellent acoustic insulation performance due to impedance mismatch and pore-neck resonance effects, achieving a noise reduction coefficient (NRC) of 0.60. The gradient-structure-based aerogels also exhibit better thermal insulation performance, with ultralow thermal conductivities as low as 0.03 W/(m &amp;amp; centerdot;K). The flame-retardant properties are significantly enhanced by incorporating Al(OH)3 via a solvent-exchange method, thereby achieving a limiting oxygen index (LOI) of 29.3%. The lightweight, gradient-structure-based, biodegradable aerogels possess excellent thermo-acoustic insulation and flame-retardant properties, thereby offering great promise as sustainable insulation materials for next-generation building infrastructure.&lt;/p&gt;
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	Foreign&lt;/p&gt;
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	5.0&lt;/p&gt;
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