A powerful country in scientific research

Jiang Hongmei and Su Lei left on Monday. They came with lots of bags and left with lots of bags as well. The only difference was that when they came they brought meat, canned food and the like, but when they left they took away vegetables grown in the Jiang family's yard. Grandma Jiang packed some of all kinds of vegetables for her, which should last her more than ten days.

After sending her mother and brother away, Su Ran went straight to the laboratory. Her research on biodegradable plastics was already in the final stages, and whether she would succeed depended on today.

She walked to the experimental field happily.

Zhang Xue and Li Yun were watering the corn. It was time to water the corn once every three days.

Zhang Xue saw her coming and asked with a smile, "Did you send your aunt and brother away?"

Yesterday she told He Cheng to come to the experimental field this morning to tell Zhang Xue that she would come later today to send her mother and brother back to the city, so Zhang Xue asked this.

Su Ran smiled and said, "Yeah, how much did you get? I'll go change my clothes and join you guys."

Li Yun shook her head. "No, no, there's not much left."

Zhang Xue: "You just continue with your work. We two can do this little thing." They both knew that Su Ran was researching something new, so as long as Su Ran entered the laboratory, they would not disturb her. They would take the initiative to do anything, for fear of delaying Su Ran's progress.

Su Ran: "Okay then, I'll go in first."

Zhang Xue: "Go quickly. Lunch is ready. I'll call you."

"Okay." After saying that, Su Ran went straight to the laboratory.

There are two types of degradable plastics: bio-based degradable plastics and synthetic degradable plastics.

She struggled for a long time about which one to study. The production cost of bio-based degradable plastics is higher than that of synthetic degradable plastics. This is because it takes more energy and resources to extract and manufacture degradable plastics from natural biomass. At the same time, the source of raw materials will be affected by climate, season and other environmental factors, which will also affect the cost. However, bio-based degradable plastics have better environmental sustainability, which means they are more environmentally friendly and easier to degrade.

One has high cost and the other has little impact on the environment. It is too difficult to choose.

After struggling for a long time, she finally chose bio-based degradable plastic. Her original intention for developing degradable plastic is to protect the environment, and she will continue to persevere!

Another reason is that bio-based degradable plastics are extracted from natural biomass such as starch, cellulose and other sugars. Starch is a rare commodity in this era, but cellulose is not!

Cellulose is found in plant cell walls and can be extracted from a wide variety of plants, whether it's wood, bamboo, flax, hemp, cotton or corn stalks.

In other words, any one of them can be used to synthesize degradable plastic, so the cost is still acceptable.

The raw material that Su Ran chose for this research was corn stalks. It was the corn harvest season. If he wanted to produce plastic at this time, he could directly buy the corn stalks from the team members, which would increase their income. In addition, it was very convenient to use local materials! So Su Ran chose this.

Except for going out for lunch during lunch time, Su Ran worked hard in the laboratory. She finally succeeded near the end of the get off work day. She touched the molded biodegradable plastic with her hand, and the familiar touch made her smile faintly.

All that’s left is testing. If there are no problems, we can start mass production.

She looked at the time. It was already past six o'clock. It was too late to test its degradation ability now. If she went back too late, her grandparents would be worried. She might as well do it tomorrow.

Su Ran put away the things on the laboratory table, then changed into his coat and locked the laboratory door.

Zhang Xue and Li Yun had already left, and it was quiet outside.

Su Ran was in a hurry to go home, and went straight to the door after coming out.

After walking a few steps, she suddenly heard the door open.

Su Ran quickly turned around and was very surprised when he saw who it was. "Why are you here?"

He Cheng smiled and replied, "I'm here to pick you up from get off work. When I came, I happened to run into Sister Zhang Xue and the others, and they asked me to come in and wait for you."

Su Ran curled her lips, "Well, you didn't make a sound, you scared me to death."

He Cheng: "I'm afraid to disturb you. Come on, I'll take you home." After saying that, he came out of the office and closed the door.

"Ah."

After the two of them went out together, Su Ran locked the door.

He Cheng looked at the cornfield not far away. The corn silk had turned brown and the leaves were withered and yellow.

He smiled and asked, "This corn grows really fast. It's ripe in just over three months. When are you going to pick it?"

Su Ran followed his gaze and said with a smile, "Wait a few days. I have already told the captain to find two or three people to help."

He Cheng: "Tell me in advance, and I'll come over to help."

Su Ran shook his head. "No, your oil mill is also very busy. I can solve it with some money. You don't have to worry. You are the factory director now. You must set an example and not let the people below have any opinions."

He Cheng sighed. Actually, when the factory people chose him to be the factory director, he was somewhat unhappy because he felt that the factory director had no freedom and had to consider too many things. Now it was proved that he was right. After becoming the factory director, there were too many things he had no control over, he couldn't even help his girlfriend harvest corn.

Su Ran patted his shoulder with amusement, "Director He, don't look so sad. You're not handsome anymore. Smile."

He Cheng looked at her heartless look and forced a smile helplessly.

Then, Su Ran burst out laughing, "Alright, alright, your laughter is uglier than crying, let's go home and have dinner, grandma said she'd make you scallion oil noodles, grandma's scallion oil noodles are delicious, you'll feel better after eating them."

He Cheng responded. Grandma's cooking skills were indeed very good. He had always heard Su Ran say that the scallion oil noodles made by grandma were delicious. He had not eaten it yet and was quite looking forward to it.

He didn't realize at all that Su Ran had led him away.

He Cheng jumped lightly, sat on the seat, and motioned Su Ran to get in.

Su Ran got on the back seat and accidentally touched He Cheng's waist. Feeling his warmth, she curled up, her face slightly flushed, and then she enjoyed the scenery as if nothing had happened.

In the evening, the afterglow of the setting sun falls on the quiet countryside. The breeze blows across the wheat fields, shaking the leaves. The fallen leaves dance in the air, accompanied by the afterglow of the setting sun, leaving a long shadow behind.