Polymers are the main component in a wide variety of applications, such as packaging, electronics, painting, surface coatings, textiles, adhesives, wastewater treatment, health and home care. Most recently, they are also attracting significant attention in the biomedical field. Their low cost and great versatility in terms of chemical and physical properties (e.g. composition, structure, molecular weight, particle size distribution and mechanical behaviour) enabled their use as replacement of many inorganic and organic materials. Specifically, the current thesis work tried to study the relationships between odour and polymer. Odorous compounds are widespread used (e.g. cosmetic, textile, homecare, coating) to make appealing several products. A methodology which aims to understand and manage the odour release by means of polymeric nanoparticles (NPs) was applied on two materials. Poly(acrylic) NPs were synthesized with a free radical polymerization (FRP) mechanism. Successively, some encapsulation strategies were used to perform the load of limonene. On the other hand, poly(δ-decalactone) was produced by means of ring opening polymerization (ROP). Both the materials were completely characterized (e.g. particles size distribution, molecular weight distribution, conversion, degree of polymerization, particle surface charge, degradation time) and tested to evaluate their adsorption and release capacity with respect of a textile substrate.
I polimeri sono i principali componenti all’interno di un'ampia varietà di applicazioni, come imballaggio, elettronica, pittura, rivestimenti superficiali, tessuti, adesivi, trattamento delle acque reflue, salute e cura della casa. Recentemente, essi hanno inoltre acquisito grande rilievo anche in campo biomedico. Il loro basso costo e la grande versatilità in termini di proprietà chimiche e fisiche (composizione, struttura, peso molecolare, distribuzione della dimensione delle particelle e comportamento meccanico) hanno permesso di utilizzarli come sostituti di molti materiali inorganici e organici. Nello specifico, questo lavoro di tesi ha cercato di studiare le interazioni tra odori e polimeri in quanto, i composti odorosi sono ampiamente usati per rendere appetibili diversi prodotti (cosmetici, tessuti, prodotti per la casa, rivestimenti). In particolar modo, due diversi materiali sono stati analizzati al fine di comprendere e gestire il rilascio degli odori mediante nanoparticelle polimeriche (NPs). Le NPs poliacriliche sono state sintetizzate attraverso un meccanismo di polimerizzazione radicalica (FRP). Successivamente, alcune strategie di incapsulamento sono state utilizzate per eseguire il carico del limonene al loro interno. D’altro canto, i poliesteri sono stati prodotti mediante polimerizzazione ad apertura di anello (ROP) del δ-decalattone. Entrambi i materiali sono stati completamente caratterizzati in termini di distribuzione della dimensione delle particelle, distribuzione del peso molecolare, conversione, grado di polimerizzazione, carica superficiale delle particelle, tempo di degrado, e testati per valutare la loro capacità di assorbimento e rilascio rispetto ad un substrato tessile.
Interaction studies : scent polymeric nanoparticles on textile
ZANZOTTERA, MARTINA
2018/2019
Abstract
Polymers are the main component in a wide variety of applications, such as packaging, electronics, painting, surface coatings, textiles, adhesives, wastewater treatment, health and home care. Most recently, they are also attracting significant attention in the biomedical field. Their low cost and great versatility in terms of chemical and physical properties (e.g. composition, structure, molecular weight, particle size distribution and mechanical behaviour) enabled their use as replacement of many inorganic and organic materials. Specifically, the current thesis work tried to study the relationships between odour and polymer. Odorous compounds are widespread used (e.g. cosmetic, textile, homecare, coating) to make appealing several products. A methodology which aims to understand and manage the odour release by means of polymeric nanoparticles (NPs) was applied on two materials. Poly(acrylic) NPs were synthesized with a free radical polymerization (FRP) mechanism. Successively, some encapsulation strategies were used to perform the load of limonene. On the other hand, poly(δ-decalactone) was produced by means of ring opening polymerization (ROP). Both the materials were completely characterized (e.g. particles size distribution, molecular weight distribution, conversion, degree of polymerization, particle surface charge, degradation time) and tested to evaluate their adsorption and release capacity with respect of a textile substrate.File | Dimensione | Formato | |
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2019_04_Zanzottera.pdf
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https://hdl.handle.net/10589/145984