Hi there! Nice to meet you!
My name is Ryoma Ikeda. Nice to meet you.
I am from Nara. Nara is a very nice place.
I like to eat. I eat too mach. I like meet, fish and Vegetables. I like all foods.
I like exercising too. I like various sports such as baseball, soccer, table tennis and volleyball. I play volleyball every Wednesday. It is very fun. I am looking forward to playing volleyball.
I like to travel. I went to various places in Japan and ate delicious food in various places. I also do sightseeing. I saw many beautiful sceneries in Japan and I like to take pictures with beautiful scenery,
I do not like the fine work. I am clumsy.
My study is chemical recycling of A by-product from pyrolysis of polystyrene.
I synthesize polymers consisting of by-products from pyrolysis of polystyrene and I will return the polymer to monomer by pyrolysis. I am trying to reduce the amount of garbage.
I am from Nara. Nara is a very nice place.
I like to eat. I eat too mach. I like meet, fish and Vegetables. I like all foods.
I like exercising too. I like various sports such as baseball, soccer, table tennis and volleyball. I play volleyball every Wednesday. It is very fun. I am looking forward to playing volleyball.
I like to travel. I went to various places in Japan and ate delicious food in various places. I also do sightseeing. I saw many beautiful sceneries in Japan and I like to take pictures with beautiful scenery,
I do not like the fine work. I am clumsy.
My study is chemical recycling of A by-product from pyrolysis of polystyrene.
I synthesize polymers consisting of by-products from pyrolysis of polystyrene and I will return the polymer to monomer by pyrolysis. I am trying to reduce the amount of garbage.
My Study
Polystyrene is produced in large quantities and is used in many places. And after use it is recycled by pyrolysis. When pyrolyzing pollutened polystyrene, the generated radicals undergo chain transfer on other carbon, then beta cleavage occurs and about 40% of by-products are produced. The by-products are mainly styrene dimer and styrene trimmer. Our laboratory has been studying this by-product, but there is no way to reuse this by-product yet, and it has been treated as garbage until now.
Therefore, my research is to synthesize polymers using by-products generated by thermal decomposition of polystyrene, thermally decompose the synthesized polymer and convert it again into a monomer. Once this is achieved, you can reuse styrene dimers and styrene trimers that have been treated as garbage, and it is possible to reduce garbage. And I think that improving the method of pyrolysis improves the yield of monomers and reduces waste.
First, styrene dimer and methyl maleimide were copolymerized to synthesize a polymer. When the synthesized polymer was thermally decomposed, it was possible to recover about 20% of styrene dimer and methyl maleimide in total. However, the yield is bad with this. We believe that this polymer is less susceptible to depolymerization due to its small steric hindrance. Therefore, we decided to increase the steric hindrance of the polymer and increase the yield of the monomer.
Next, we synthesized a polymer by copolymerizing styrene dimer and phenyl maleimide having a highly substituted substituent. When the synthesized polymer was thermally decomposed, it was possible to recover about 50% of styrene dimer and phenylmaleimide in total. I was able to raise the yield of monomer. However, this time, resonance stabilization of the radical chain ends occurred during thermal decomposition, polymer decomposition hardly occurred, and monomer yield was reduced. Also many side reactions occurred.
The monomer yield is still low. In future plans, I would like to think of a structure with more steric hindrance and a structure not to resonate and stabilize, synthesize a polymer, and decompose thermally by using it to increase the yield of monomers. I would like to make a certain probability of thermal decomposition method before I graduate.
Therefore, my research is to synthesize polymers using by-products generated by thermal decomposition of polystyrene, thermally decompose the synthesized polymer and convert it again into a monomer. Once this is achieved, you can reuse styrene dimers and styrene trimers that have been treated as garbage, and it is possible to reduce garbage. And I think that improving the method of pyrolysis improves the yield of monomers and reduces waste.
First, styrene dimer and methyl maleimide were copolymerized to synthesize a polymer. When the synthesized polymer was thermally decomposed, it was possible to recover about 20% of styrene dimer and methyl maleimide in total. However, the yield is bad with this. We believe that this polymer is less susceptible to depolymerization due to its small steric hindrance. Therefore, we decided to increase the steric hindrance of the polymer and increase the yield of the monomer.
Next, we synthesized a polymer by copolymerizing styrene dimer and phenyl maleimide having a highly substituted substituent. When the synthesized polymer was thermally decomposed, it was possible to recover about 50% of styrene dimer and phenylmaleimide in total. I was able to raise the yield of monomer. However, this time, resonance stabilization of the radical chain ends occurred during thermal decomposition, polymer decomposition hardly occurred, and monomer yield was reduced. Also many side reactions occurred.
The monomer yield is still low. In future plans, I would like to think of a structure with more steric hindrance and a structure not to resonate and stabilize, synthesize a polymer, and decompose thermally by using it to increase the yield of monomers. I would like to make a certain probability of thermal decomposition method before I graduate.
Japan Problem
In recent years, Japan has a problem of "waiting child" problem. The waiting child is a child waiting for entry despite the fact that there is a childcare center shortage or quorum despite being entered in a nursery school and can not enter because of a full capacity. The rapid increase in the number of waiting children in some cities has become a problem since the latter half of the 1990s. The number of waiting children as of April 1, 2015 is 23,167 people nationwide, and the number itself is decreasing compared to 2003 (26,383 people) 10 years ago, but from 21,371 as of April 1, 2014 It increased for the first time in five years. As of October 1, 2015, 45,315 people tend to be more autumn than spring, and fluctuations within the year are also large. Also, the problem of waiting children varies from prefecture to prefecture. Among them, the problem of standby children is serious in Tokyo in the center of Tokyo. This is mainly due to population concentration in large cities, but besides that, child-rearing families who need nursery schools are rapidly increasing because social structure has changed significantly, such as an increase in common family families and diversification of home environment The fact that the facility development lagged behind such as the addition of nursery schools and the increase in the number of acceptance was also part of the cause. In general, in addition to the advancement of women 's social advancement, due to the long - term depression after the 1990' s, the number of families who worked together increased and that there were families that lack child - rearing such as single parent families, The need for it is said to have increased. However, since the number of nursery teachers is small and the burden is large, it is also a problem that few people are interested in nursing teachers. Currently, the country is dealing with this problem, but it is not connected to a fundamental solution. Although this problem is very serious, it is difficult to solve, it is getting worse year by year. Early resolution is necessary.
Opinions on other people's impressions
Kamiya's comment on the opinion of compulsory education. Kamiya thinks that compulsory education is not necessary. However, I think that compulsory education is necessary. Compulsory education is the education that a child, government or the public must give children. In Japan, six years at elementary school and three years at junior high school are compulsory education. During this period, you will receive education to acquire basic knowledge. I think that it is very important to learn basic knowledge at a young age from 6 to 15 years old. I think that you will have a solid knowledge by studying hard over the course of nine years. Also, I think that studying music and home economics classes will give me some degree of education. Even though I am smart, I think that it will be hard for society to live without education. Also, I have opportunities to get in touch with other people of the same age, so I think that communication will be solid. Also, I think that being in touch with various people will help us to create our own personality. For the above reasons, I think that compulsory education is necessary.