Save Our Stuffies: Protecting Our Environment & Our Hearts with Chemistry!

If you would like to listen to an extended video that describes this project in more detail, please watch this link: https://youtu.be/N_2hP4QRNpg.

500 Million lbs of stuffies in landfills/yr=massive negative environmental impact[1,2,3]. Stuffie polyester-fibers take >500yrs to decompose; fur-fibre surface area >plastic bottles & other waste=insidiously leaching harmful toxins like antimony, oligomers, synthetic dyes, and microplastics[4,5,6,14,15,16,17,20,21]. Stuffie-dense landfill gas=36,000x more antimony: 1,108 tons/yr released[7,8]! Environmental tragedies impact all life on earth. ~51% of stuffies discarded <1 year after purchase, 60% are due to stains/hygienic reasons: I wanted to find a way to extend their life cycles[9,40].

I tested various chemical strategies for protection: superhydrophobic coatings, amphiphilic formulas, & botanical extracts that would preserve the tribology of loveable fluffy faux fur[18,28,29,30]. Experimentation enabled me to find the best protector (a repurposed edible botanical extract) which I modified into a novel formula, & designed the most effective method to restore stained stuffies.

My novel, proprietary formula & method appeals to > 95% of households with children[10], & the 70% of young children who sleep with ≥ 1 stuffie nightly[11]. The main constituents also aid with sleep quality, sleep hygiene, pain perception, stress & mood - helping stuffies do their job even better[23,24,25,26,27,41,47,48,49,50]! It also addresses a fast-growing combined market=~ 3 billion dollars revenue/yr, with a CAGR of 13.3%, that would support a sustainable environmental revolution[34,39]! I’m trailblazing a movement of Forever-Heirloom stuffies for a more sustainable & environmentally friendly future, & a lifelong bond with their favourite stuffies[12,13].

Background Research:

Background research was conducted with peer-reviewed journal articles & reputable market reports analyzing the popularity, care practices, & environmental consequences of stuffie-disposal. Research confirmed that polyester fur-fibres leach antimony, oligomers, synthetic dyes & microplastics into soil & groundwater rather than biodegrading[4,5,14,15,16,17,20,21]. Research shifted towards identifying possible non-toxic ingredients/products & maintenance methods to extend stuffies’ lifespans, thereby reducing stuffies’ overall ecological footprint[32,33]. Finally, research verified that the combined market of textile hygiene, aromatherapy, & stuffie protection is valued at more than $3Billion in revenue annually, with 13.3% CAGR, which could start a sustainable-environmental revolution [31,34,35,36,37].

Design:

The project utilized a distinct, three-phase experimental structure-Protection, Cleaning, & Combination-to maintain rigorous variable control while testing various products & methods. The selection process prioritized 100% non-toxic ingredients because 95% of families interact closely with stuffies. Based on my objective testing of various chemical strategies for protection ranging from superhydrophobic coatings to amphiphilic formulas & extracts that would improve the tribology of faux fur, I found the best protection formula & the most effective method to restore stained stuffies.

Materials:

Polyester faux-fur yarn was used as the primary model; microscopic analysis confirmed this material is structurally & functionally identical to stuffie-fur. A light-coloured fibre was selected to better detect discolouration/chemical reactions. To maintain experimental integrity, isolated basins, sterile containers, & individual applicators were used for every strand.

Data Collection & Variable Control:

Qualitative findings were translated into quantitative data using objective rubrics scoring fluffiness, softness-texture, appearance, smell, residue, fibre-shape, & overall appeal. A meticulous documentation protocol produced an extensive visual dataset for comparative analysis. Variables were controlled by standardizing protocols, water temperature, soak duration, & storage environments. Each strand was individually labelled along with its respective spoolie & container, & large basins ensured uniform soap concentrations before distribution into containers to ensure identical chemical conditions.

Phase 1

Through objective testing of various chemical strategies for protection, ranging from superhydrophobic coatings to amphiphilic formulas & extracts that would improve the tribology of faux fur, I found that Botanical Extract 2 was the most effective (Image 2). It preserved the faux-fur strand’s original softness, fluffiness, scent, & colour. Brushing with a spoolie consistently improved scores & texture, as it separated & organized the fibres. My research uncovered the tribology of this extract’s 5 main components that keep stuffies’ fur-fibres in their original fluffy condition[42]  (Image 6).

Phase 2

Cleaning Agent 1 (CGG) was identified as the most effective cleaning agent. It successfully eliminated the majority of blueberry debris while restoring the original fibre colour & texture (Image 4). The optimal cleaning protocol required a 15-minute soak, with light agitation midway through the cycle & a final light rinse to remove residual soap & debris.

Patting the strands with paper towel before drying was helpful. Comparative testing demonstrated that blow-drying significantly outperformed air-drying; air-dried strands suffered from clumping & shriveling, but blow-dried strands remained soft & voluminous. The Low Temperature, High Speed (LTHS) setting restored fibres to their original fluffiness (Image 5). LTHS strands scored an average of 7.75 points higher than High Temperature, Low Speed (HTLS) strands, which is over ¼ of the total possible score (Image 5)! This performance gap proves that high-speed settings provide the necessary force to "fluff" the fibres, while the cool setting protects the heat-sensitive polyester fibres from curling/melting. This procedure proved to be the most effective method to clean & restore stained stuffies.

Phase 3

To further improve my spray, I created a novel formula by combining it with other ingredients to enhance its abilities & anti-microbial properties. The final experiment tested three different combinations of Botanical Extract 2 & Ethanol (Image 3) Combination 2 was superior, even outperforming the original extract. In Combination 2, Botanical Extract 2 maintained its refreshing effects & fibre softness, while Ethanol disinfected the fur & enhanced the scent. This concentration provided enough extract to keep the fibres in prime condition without the high alcohol concentrations causing frizziness. My results indicate that saturating new stuffies with a fine mist of Combination 2, brushing with a spoolie, & allowing it to fully air-dry would be the best protocol for a new stuffie.

Since observational ratings in Phase 3 were much closer together, a statistical analysis was employed to better understand the minute differences between combinations. The total mean scores for the Combination 1 (μ = 27.47) & Combination 2 (μ =27.32) were very close, and a Student’s t-test confirmed no statistically significant difference between them (p = 0.88). Furthermore, although Combination 2 exhibited a tighter score distribution (σ= 1.36) compared to Combination 1 (σ= 1.85), an F-test determined the variances were not statistically different. Ultimately, Combination 2 was selected as superior because with similar performance, it had the added disinfecting benefits of ethanol. Furthermore, Combination 2 was statistically superior to both Combination 3 (p = 0.0026) & Combination 4 (p = 0.0062), comfortably meeting the p < 0.05 threshold for significance.

My proprietary formula and method would trailblaze a shift from the current disposable/wasteful culture to a care and repair culture. If stuffies are cherished and preserved, they can be kept as Heirloom or Forever-Stuffies that prevent harmful chemicals & toxins from leaching into our environment. My biodegradable formula also addresses a fast growing combined market, valued at $3Billion in revenue annually with a fast compound annual growth rate of 13.3%[31,34,38,39]. This would support a sustainable-environmental revolution!

Due to the botanical extract’s effective results, I conducted secondary research specifically on the impacts that this ingredient has with children. Research shows that the botanical extract in my spray consistently reduces anxiety symptoms based on a systematic review of clinical trials[46]. It also has antidepressant-like effects because the flavonoids in the extract enhance the natural calming effect of Gamma-aminobutyric acid by acting like a milder, natural version of benzodiazepines[22,44,45,46]. This interaction provides a natural calming effect while also lowering cortisol & adrenaline levels[23,24,27,50]. Multiple clinical studies also showed that aromatherapy with my spray’s botanical extract improved sleep quality & reduced pain by triggering the release of natural endorphins & enkephalins[25,26,27,43,47,49,50]. Ultimately, when a child cuddles a treated stuffie, they engage in a targeted aromatherapy session that fosters emotional resilience & supports a sustainable "care & repair" culture by supporting emotional attachments, and preserving the physical longevity of their most cherished possessions; their "Forever-Heirloom Stuffies."

Future work would include analyzing my formula using gas & liquid chromatography with mass spectroscopy, so that I can determine the exact signature of all the components in my formula to ensure consistent batches and results when mass-produced. I would also test how well the ethanol in my spray would keep stuffies sanitized, and how long the protective properties of my spray last. Since my spray addresses a combined market worth more than three billion in revenue per year, that has a fast-growing 13.3% compound annual growth rate, these future studies would be important for future commercialization[31,34,38,39].

I would like to thank my teacher, Ms. Laura Fernandes, & my principal, Ms. Atiya Husain, for their invaluable kindness, support & constant encouragement. I would like to acknowledge the scientists from UofT for letting me learn about the equipment & methods for gas & liquid chromatography with mass spectroscopy! I also would like to thank my whole family, especially my cool auntie, for their supervision & constant positive motivation!

Most importantly, I would like to express my gratitude to my father, who supported me & stayed with me throughout the many hours I experimented. He helped me juggle documentation & photography during experiments & provided me with several helpful suggestions during my project, including teaching me how to do a t-test on google sheets. He was also my #1 fan and one of the many reasons why I enjoyed making this project.

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All graphics designed by Sophie Vivienne Ma.

Some graphics drawn by Sophie Vivienne Ma.

Some graphics enhanced with AI including: Google. (2024). Gemini (Version 1.5 Pro) [Large language model]. https://gemini.google.com/