️Plastic’s Doom: Cellulose as The Ultimate Sustainable Material️

[00:00:03]Oh, I just want to take you anywhere that you like. We could go out any day any single minute. The equivalent of a full garbage truck of plastic enters our oceans. There isn't just an environmental problem anymore.

[00:00:31]Microplastic have been found in our food, our drinking water, and even inside our human body. So the question is, is there anything better, something strong, safe and natural that we already have access to?

[00:00:50]Actually, yes, it has been here for over 400 million years. Here is where cellulose get interesting. Each cellulus chain has hydroxile groups or oh group sticking out from the sides.

[00:01:07]When chains line up next to each other, those OH groups pulls on each other through hydrogen bonds. Multiply that by hundreds of parallel chain and you get a tightly packeted crystalline structure called a microfiber.

[00:01:25]Now that we understand the structure of cellulose, let's explore what makes this one of nature's greatest engineering achievements. First, cellulose has exceptional mechanical strength. The extensive hydrogen bonding between cellulose chains creates a highly stable structure that can support the growth of large plants and trees. Second, cellulose is insoluble in water. Even though plants are constantly exposed to moisture and rain, cellulose remains intact and continues to provide structural support. Another important properties is that cellulose is biodegradable.

[00:02:10]Unlike many synthetic materials, cellulose can be naturally broken down by microorganisms, making it environmentally friendly and reducing long-term waste accumulation.

[00:02:25]Cellulose is also renewable because it is continuously produced by plants through photosynthesis.

[00:02:33]As plants grow, they naturally generate more cellulose, making it a sustainable resource for future applications.

[00:02:44]In fact, cellulose is the most abundant organic polymer on Earth. It is found in plants, cotton, wood and many other natural materials making it one of the most important biomolelecules for life and sustainable development.

[00:03:04]When it comes to the synthesis of cellulose, there are actually five synthetic roots. natural plum biosynthesis, bacterial biosynthesis, enzyatic environynthesis and the purely chemical laboratory approaches which is polycondensations and the stepwise addition method. We exploring the condensation reaction of cellulose. is a fascinating polyaccharide made from beta glucose molecules and we are going to break down exactly how its unique arrangement allows it to support entire glands.

[00:03:40]First look at the beta glucose. You can identify it because the hydroxy group on carbon one is position above the ring.

[00:03:50]This is different from alpha glucose where it's below. When you try to join two beta glucose molecules for a condensation reaction, you'll notice they just don't fit. The hydroxy groups on C1 and C4 are too far apart to bond.

[00:04:10]To solve this, nature uses a flip. Every alternate betalucose molecule is inverted or turned upside down. This rotation brings the carbon one and a carbon 4 hydroxy groups into close proximity.

[00:04:30]Now a condensation reaction can occur.

[00:04:33]Pulling out a molecule of water and forming a stable one for glycosidic bond. Now here's the part that I think it's genuinely exciting. Recent research has shown that we can design new types of cellulose by sending the building blocks before they go into the enzyme.

[00:04:55]Instead of regular glucose, scientists use a modified sugar called a florinated glucose analog. They put this into the CDP enzyme, but the enzyme still built a cellulus chain.

[00:05:10]But the resulting nano cellulus had completely different surface properties.

[00:05:15]What this mean is that we are no longer limited to the cellulus that nature produced. By controlling the input, we can engineer the output. We can design cellulose for drug delivery system, for flexible electronic, for nano composite materials and for tissue engineering scaffolds. Cellulose isn't just something that we extract from the waste. is becoming a design platform, a starting point for materials that we haven't built yet. You probably add cellulose this morning.

[00:05:51]Every grain, every fruit, the fiber in your food is mostly cellulose.

[00:05:57]But cellulose also has a growing role in medicine. When modified chemically, cellulose can form a hydrogel, a threedimensional uh base structure that human cells can grow on. This is the basis of tissue engineering. Solulus basic base materials are being used as wound dressings that are biompatible and biodegradable as capsules that carry drugs to a specific location in the body and as scal that support the growth of replacement issues in the laboratory.

[00:06:36]Plastic is made from petroleum a force and it can take 500 years to break down in the environment and even direct it behind a microplastic particle that enter a food chain. Sulus made from plant growing sunlight when you break down it will return to a soil as a water and carbon dioxide. So that is no residue.

[00:07:03]No nesting pollution. Salute based materials are already replacing plastics in packages food wage by disposable container. At the start we ask a very simple question. What if nature already created a better material for us?

[00:07:26]For over 400 million years, every plant on Earth has been quietly building one of the strongest, lightest, and most sustainable structure ever known. No factory required, no fossil fuels, just a sunlight, water, carbon dioxide, and one remarkable molecule.

[00:07:46]Cellulose solve the problem we are now trying to solve. Maybe the future of pre chemistry does not begin in a laboratory. Maybe it's beginning reading early.